Within Yorkshire UFOs
Was the Silpho Moor Saucer Ever Convincing?
The Silpho Moor object is Yorkshire's most physical UFO claim, but later archive work made a hoax explanation look far stronger.
On this page
- What was reportedly found near Scarborough
- The copper sheets and missing evidence trail
- Why later analysis weakened the UFO claim
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Introduction
The Silpho Moor saucer was never very convincing as evidence of an extraterrestrial craft, but it remains one of Yorkshire’s most important UFO cases because it produced something tangible: a small metal object, reportedly found near Scarborough in November 1957, rather than just a fleeting light in the sky. The object was said to contain thin copper sheets covered in strange writing, and the story quickly became a British “crashed saucer” legend. Later archive work, however, made the hoax explanation look much stronger. Tests found nothing unearthly in the material, the chain of custody was messy, and the surviving fragments looked more like the remains of a carefully made local deception than a technological artefact from space. [Smithsonian Magazine]smithsonianmag.comSmithsonian Magazine Fragments of Famed 'UFO' Discovered in ArchivesSmithsonian MagazineFragments of Famed 'UFO' Discovered in Archives…February 19, 2018 — 19 Feb 2018 — Though experts deemed it a hoax…
That does not make the case worthless. For Yorkshire UFO history, Silpho Moor is a useful warning case. It shows how a dramatic object, a Cold War mood, local press attention and a missing-evidence trail can turn a weak claim into a durable legend. It also shows why physical UFO cases often become less impressive, not more impressive, when the surviving evidence is finally traced.
What was reportedly found near Scarborough
The basic story places the incident on Silpho Moor, near Scarborough, on the North York Moors in historic Yorkshire. In late 1957, men travelling in the area were said to have seen a glowing object come down. One account has a man going to investigate, finding a small metallic saucer in bracken, then returning with others only to discover that the object had disappeared. The object was later reportedly obtained after enquiries and a payment, rather than being secured at the scene by police, the Air Ministry or another official body. [Cipher Mysteries]ciphermysteries.comCipher Mysteries The Silpho Moor UFO cipher mysteryCipher Mysteries The Silpho Moor UFO cipher mystery
The alleged saucer was small, not the full-sized craft that popular imagination often supplies. Contemporary and later accounts usually describe it as about 18 inches, or roughly 45 centimetres, across and around 15 kilograms in weight. It was said to be made of metal, with markings on its base that were described as hieroglyphics. When opened, it reportedly contained a small “book” or set of 17 thin copper sheets, also covered with strange symbols. [Art Law & More]artlawandmore.comArt Law & More UK 'flying saucer' discovered in storage at Science MuseumArt Law & More UK 'flying saucer' discovered in storage at Science Museum
This physicality is what made Silpho Moor stand out from many Yorkshire sightings. A light over the moors can be misjudged, forgotten or reinterpreted. A metal object can be photographed, weighed, cut open and tested. That should have made the case stronger. Instead, it exposed the case’s central weakness: the object’s story depended heavily on private handling, second-hand reporting and claims about missing components, rather than a clean forensic record from discovery to analysis.
The timing also mattered. The claim appeared in the first decade of the flying saucer era, only months after the Soviet launch of Sputnik in October 1957. Public imagination was already primed by rockets, satellites, atomic anxiety and stories of American saucers. Silpho Moor arrived at a moment when a small “space message” warning humanity could feel topical rather than absurd. That cultural fit does not prove fraud by itself, but it helps explain why the story caught on.
The copper sheets and the message problem
The strangest part of the Silpho Moor object was not just the metal shell. It was the alleged writing. The copper sheets were said to contain a long message from an alien figure often rendered as “Ullo” or “Ulo”, warning humanity about its behaviour and future. A local Scarborough café owner, Philip Longbottom, was reported to have spent many hours working on the symbols and producing a translation. Later summaries describe the message as a moral and atomic-age warning rather than a technical document. [Cipher Mysteries]ciphermysteries.comCipher Mysteries The Silpho Moor UFO cipher mysteryCipher Mysteries The Silpho Moor UFO cipher mystery
That is important because the “message” made the object more culturally legible but less evidentially impressive. A genuine unknown artefact would become stronger if the writing could be documented, independently copied, compared, tested and decoded by specialists using a transparent method. Silpho Moor moved in the opposite direction. The message became part of the legend, but the evidence trail for the full set of sheets and the exact symbol system remained poor.
The claimed translation also has the flavour of 1950s contactee literature: warnings about human violence, space travel and moral improvement. That does not make it impossible, but it puts the claim in a familiar pattern. Many mid-century saucer stories were not just sightings; they carried messages about nuclear danger, spiritual development and the future of civilisation. Silpho Moor’s copper sheets fit that cultural world more neatly than they fit the world of engineering, aviation or materials science.
A later cipher-focused review of the case noted that the writing was discussed in Flying Saucer Review and that Longbottom’s account described a complicated system rather than a simple substitution. The same review also points to later claims that another analyst considered the code comparatively simple, based around repeated line shapes and orientations. The most cautious conclusion is not that the writing was definitely solved, but that the claimed “alien script” never became a robust, independently verified piece of evidence. [Cipher Mysteries]ciphermysteries.comCipher Mysteries The Silpho Moor UFO cipher mysteryCipher Mysteries The Silpho Moor UFO cipher mystery
For a reader trying to assess the case, the copper sheets therefore cut both ways. They make the story memorable. They do not make it reliable. The more elaborate the supposed message becomes, the more urgent the need for a clean evidence trail becomes — and that is exactly what the case lacks.
The missing evidence trail
The Silpho Moor case is sometimes framed as mysterious because the object vanished. That is only partly fair. What seems to have happened is less like a state cover-up and more like a confused private evidence trail, with pieces passing between local owners, enthusiasts and specialists before being forgotten in museum storage.
The object was reportedly cut open and examined early on. That alone weakened its value as physical evidence. Once an object has been drilled, split, sampled, passed around and partly dismantled, later investigators have to separate original features from damage, contamination and interpretation added after the fact. In Silpho Moor, there was no secure recovery by an official accident investigator, no sealed exhibit procedure, and no single authoritative file containing the whole object, the copper booklet, witness statements and test results.
The most important later development came in 2018, when researcher David Clarke reported that fragments of the “Silpho Moor Object” had been found in the Science Museum Group archives. The remains had apparently been sent to London for examination in 1963 and then survived, not as a proudly displayed UFO relic, but as small samples in archive storage. Smithsonian Magazine summarised the rediscovery as fragments of the famed object turning up after decades in which the saucer had been thought lost. [Smithsonian Magazine]smithsonianmag.comSmithsonian Magazine Fragments of Famed 'UFO' Discovered in ArchivesSmithsonian MagazineFragments of Famed 'UFO' Discovered in Archives…February 19, 2018 — 19 Feb 2018 — Though experts deemed it a hoax…
The archive story is telling. The fragments were not hidden in a dramatic secret vault. They were neglected, mislaid or absorbed into institutional paperwork. That is a common fate for odd, low-priority material. It also undermines the stronger conspiracy version of the Silpho Moor legend. A cover-up would require the object to be dangerous or revealing. The surviving evidence suggests something more mundane: experts saw no great mystery, and the material eventually became an archival curiosity.
The missing parts still matter. If the full object and full copper-sheet booklet no longer exist in a verifiable form, the case cannot be rebuilt to modern evidential standards. The rediscovered fragments help explain what the object probably was, but they do not restore the original scene, the original handling or the complete claimed message.
Why later analysis weakened the UFO claim
The strongest reason to doubt the Silpho Moor saucer is simple: scientific examination did not find anything that required an extraordinary explanation. According to Clarke’s account of the archive record, the Science Museum passed samples to Gordon Claringbull of the Natural History Museum, a specialist with expertise relevant to unusual mineral and explosive materials. Claringbull reported that he found nothing unusual and was prepared to regard the pieces as terrestrial. [drdavidclarke.co.uk]drdavidclarke.co.ukyorkshire ufo crash mystery solved after 60 yearsas a 'a miniature…
Other reporting has repeated the same broad conclusion: metallurgists and experts who examined the object found no special properties and no sign that it had travelled through space. A genuine object falling from orbit or entering the atmosphere at speed should invite questions about heating, ablation, unusual residues or materials beyond ordinary workshop manufacture. The Silpho fragments did not supply that kind of evidence. [Live Science]livescience.comOpen source on livescience.com.
There were claims that some elements were unusual. Tests at Manchester University were reported to have found lead in the shell and high-purity copper in parts of the object. But “unusual” is not the same as “non-human”, and high-purity copper is not evidence of extraterrestrial origin. The problem for the UFO claim is that every apparently interesting feature also has a plausible human route: copper sheet, tubing, fused material, paint or heat effects, workshop marks and decorative symbols can all be produced on Earth. [drdavidclarke.co.uk]drdavidclarke.co.ukyorkshire ufo crash mystery solved after 60 yearsas a 'a miniature…
The hoax theory also explains the theatrical details better than the spacecraft theory does. A tiny saucer, a hidden booklet, mysterious symbols and a message warning humanity are exactly the sort of features likely to impress newspaper readers and saucer enthusiasts. They are less convincing as the accidental remains of a working craft. The object appears designed to be found, opened and interpreted.
That point was made strongly in sceptical reassessments. A 1990 article in The Skeptic treated the Silpho Moor affair as most likely a well-meant hoax shaped by atomic anxieties rather than as a genuine interplanetary incident. That judgement fits the later archive evidence: the case is interesting because of what people made and believed, not because the object passed physical tests. [The Skeptic]skeptic.org.ukThe Skeptic Return To Silpho MoorThe Skeptic Return To Silpho Moor
Why the hoax question is stronger than the mystery
Calling Silpho Moor a hoax does not answer every small question. It does not identify the maker with certainty. It does not fully reconstruct the workshop, the motive or the path by which the object moved through local hands. But it does explain the largest features of the case with fewer assumptions than the extraterrestrial version.
A hoax explanation accounts for:
- The theatrical design: a miniature saucer with symbols and a hidden message reads like a crafted prop.
- The cultural timing: late 1957 was saturated with space-race excitement and nuclear anxiety.
- The weak recovery chain: the object was not secured at the scene by official investigators.
- The material findings: later examination found no persuasive non-terrestrial properties.
- The legend’s growth: missing evidence and fragmentary records allowed speculation to expand.
The alternative requires much more. It asks the reader to accept that an extraterrestrial or otherwise extraordinary object arrived near Scarborough, left behind a small artefact with a moral message, passed into private hands through a confused chain, was cut up, tested, found materially ordinary, then disappeared into museum storage without producing decisive official alarm. That is not impossible in the abstract, but it is a poor fit to the evidence.
The role of Lord Dowding, the former head of RAF Fighter Command during the Battle of Britain, shows why witness status and object status must be separated. Dowding reportedly examined the object and considered it genuine, describing it as a miniature flying saucer. His reputation made the story more newsworthy, but it did not turn the object into reliable evidence. Expertise in wartime air defence did not make him a materials scientist, and belief after inspection is not the same as a documented forensic finding. [drdavidclarke.co.uk]drdavidclarke.co.ukyorkshire ufo crash mystery solved after 60 yearsas a 'a miniature…
This distinction matters across Yorkshire UFO history. A credible or famous person can make a case worth taking seriously as testimony. They cannot by themselves solve the physical question. In Silpho Moor, the physical question is exactly where the case performs worst.
What Silpho Moor still tells us about Yorkshire UFO history
Silpho Moor belongs in Yorkshire’s UFO record because it is the county’s most famous “object” case. Todmorden has a serving police officer’s extraordinary testimony. Ilkley Moor has a disputed photograph. Silpho Moor has fragments, claims of laboratory examination and a supposed alien text. That makes it unusually useful for comparing different kinds of UFO evidence within the same regional tradition.
It also shows how Yorkshire geography helped the story. The North York Moors offered a suitably lonely setting: open land, darkness, rough tracks, bracken and a sense of distance from ordinary urban life, even though Scarborough and its newspapers were close enough to carry the story quickly. The setting made the discovery feel plausible as an encounter at the edge of the everyday.
At the same time, Silpho Moor demonstrates the limits of “physical evidence” as a phrase. Physical evidence is only as good as its provenance, handling and analysis. A mysterious object with no secure chain of custody can become less reliable than a well-documented witness report. The saucer’s survival in fragments is valuable, but mainly because it allows the claim to be tested against a mundane explanation.
The case also sits awkwardly beside official British UFO records. The National Archives notes that UK official UFO material is substantial but incomplete, with many early Ministry of Defence records lost because older policy treated them as temporary material. That wider archival gap can feed suspicion around 1950s cases. But Silpho Moor’s weakness does not depend on missing MoD files. The decisive problem is closer to the object itself: the surviving material and documented expert opinion do not support the extraordinary claim. [National Archives]cdn.nationalarchives.gov.ukbriefing guide 12 07 12briefing guide 12 07 12
A fair verdict on the Silpho Moor saucer
The fairest verdict is that the Silpho Moor saucer is historically important but evidentially weak. It is important because it became one of Britain’s most memorable alleged crashed saucers and because it gave Yorkshire a rare UFO story with an actual artefact at its centre. It is weak because the artefact’s chain of custody was poor, the claimed message was never independently established as meaningful evidence, and later scientific and archival work pointed firmly towards a terrestrial origin.
The hoax explanation is not a lazy dismissal. In this case, it is the explanation that best fits the known facts. The object looks like something made to exploit the flying saucer culture of its time. The copper sheets and symbols look more like narrative devices than technological necessities. The later rediscovery of fragments in museum archives did not rescue the UFO claim; it reduced the mystery by showing that experts had examined the material and found nothing unearthly. [Smithsonian Magazine]smithsonianmag.comSmithsonian Magazine Fragments of Famed 'UFO' Discovered in ArchivesSmithsonian MagazineFragments of Famed 'UFO' Discovered in Archives…February 19, 2018 — 19 Feb 2018 — Though experts deemed it a hoax…
Silpho Moor therefore matters less as “Britain’s Roswell” than as Yorkshire’s clearest lesson in evidential caution. A case can be famous, physical, locally rooted and still not be convincing. The surviving record leaves room for curiosity about who made the object and why, but very little room for treating it as strong evidence of a crashed craft from somewhere beyond Earth.
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Provides context for evaluating physical UFO cases and the evidential standards that weak cases like Silpho Moor often fail to meet.
The Mammoth Encyclopedia of Unsolved Mysteries
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Conspiracy
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Endnotes
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Source: drdavidclarke.co.uk
Title: yorkshire ufo crash mystery solved after 60 years
Link: https://drdavidclarke.co.uk/2018/02/08/yorkshire-ufo-crash-mystery-solved-after-60-years/Source snippet
as a 'a miniature...
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Source: space.com
Title: 39723 silpho moor ufo
Link: https://www.space.com/39723-silpho-moor-ufo.html -
Source: drdavidclarke.co.uk
Link: https://drdavidclarke.co.uk/2018/02/ -
Source: drdavidclarke.co.uk
Title: Silpho Saucer
Link: https://drdavidclarke.co.uk/tag/silpho-saucer/ -
Source: drdavidclarke.co.uk
Link: https://drdavidclarke.co.uk/tag/sputnik/ -
Source: news.sky.com
Title: ufo desk why mod shut real life x files 10442364
Link: https://news.sky.com/story/ufo-desk-why-mod-shut-real-life-x-files-10442364 -
Source: smithsonianmag.com
Title: Smithsonian Magazine Fragments of Famed ‘UFO’ Discovered in Archives
Link: https://www.smithsonianmag.com/smart-news/fragments-famed-ufo-discovered-archives-london-museum-180968198/Source snippet
Smithsonian MagazineFragments of Famed 'UFO' Discovered in Archives...February 19, 2018 — 19 Feb 2018 — Though experts deemed it a hoax...
Published: February 19, 2018
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Source: ciphermysteries.com
Title: Cipher Mysteries The Silpho Moor UFO cipher mystery
Link: https://ciphermysteries.com/2023/07/26/the-silpho-moor-ufo-cipher-mystery -
Source: artlawandmore.com
Title: Art Law & More UK ‘flying saucer’ discovered in storage at Science Museum
Link: https://artlawandmore.com/2018/02/13/uk-flying-saucer-discovered-in-storage-at-science-museum/ -
Source: livescience.com
Link: https://www.livescience.com/61785-silpho-moor-ufo.html -
Source: skeptic.org.uk
Title: The Skeptic Return To Silpho Moor
Link: https://www.skeptic.org.uk/1990/07/from-the-archive-return-to-silpho-moor-the-scarborough-sky-crash-of-1957/ -
Source: cdn.nationalarchives.gov.uk
Title: briefing guide 12 07 12
Link: https://cdn.nationalarchives.gov.uk/documents/briefing-guide-12-07-12.pdf -
Source: nationalarchives.gov.uk
Link: https://www.nationalarchives.gov.uk/help-with-your-research/research-guides/ufos/ -
Source: nationalarchives.gov.uk
Link: https://www.nationalarchives.gov.uk/explore-the-collection/explore-by-time-period/postwar/ufo-reports/ -
Source: cdn.nationalarchives.gov.uk
Link: https://cdn.nationalarchives.gov.uk/documents/the-ufo-files-extract.pdf -
Source: cdn.nationalarchives.gov.uk
Link: https://cdn.nationalarchives.gov.uk/documents/final-tranche-of-UFO-files-released.pdf -
Source: facebook.com
Link: https://www.facebook.com/Timetravelersnostalgia/photos/-miniature-ufo-wreckage-discovered-in-science-museum-archiveknown-as-britains-an/2038744382817093/ -
Source: podcastufo.com
Title: flying saucer
Link: https://podcastufo.com/tag/flying-saucer/
Additional References
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Source: youtube.com
Title: The Silpho Moor UFO Incident: Alien Artefact or Elaborate Hoax?
Link: http://www.youtube.com/watch?v=QSCQnP-3wToSource snippet
Silpho Moor UFO Incident | Episode 87: Things Are About To Get Weird Podcast...
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Source: youtube.com
Title: Silpho Moor UFO Incident | Episode 87: Things Are About To Get Weird Podcast
Link: http://www.youtube.com/watch?v=dzB6jFAdaBkSource snippet
The Silpho Saucer | Did it really fall from the sky?...
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Source: youtube.com
Title: The Silpho Saucer | Did it really fall from the sky?
Link: http://www.youtube.com/watch?v=UOjsK_QH6pISource snippet
The mystery of the Silpho Saucer and the Fish and Chip shop...
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Source: youtube.com
Link: http://www.youtube.com/watch?v=1W6fSx4-gvASource snippet
"Silpho Moor" UFO The Silpho Moor UFO Incident: Alien Artefact or Elaborate Hoax?...
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Source: facebook.com
Link: https://www.facebook.com/groups/169176553174562/posts/1626763900749146/ -
Source: podcastufo.com
Link: https://podcastufo.com/tag/p-longbottom/ -
Source: alienexpanse.com
Link: https://alienexpanse.com/index.php?threads%2Frecords-of-infamous-silpho-moor-ufo-crash-found-in-museum-archives.1516%2F= -
Source: instagram.com
Link: https://www.instagram.com/p/DXbSQIZimnB/ -
Source: facebook.com
Link: https://www.facebook.com/groups/169176553174562/posts/1627891203969749/ -
Source: facebook.com
Link: https://www.facebook.com/ancientoriginsweb/posts/the-international-media-claims-wreckage-from-a-miniature-ufo-crash-in-north-york/2232560580118207/
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