Frank's clothing

On the night the murder was alleged to have been committed, it was claimed that Frank was wearing the following: As the forensic report for the Defence pointed out, considering the manner and violence of the death of Alan Raffle, blood would have been expected to have been widely splashed. A large amount of clothing was taken from Frank's house and examined, including all the items listed above. No blood staining was found anywhere on Frank's clothing, boots included. It is of course possible that washing could have removed the blood staining, but washing only removes surface or visible blood stains and not blood which has impregnated the fibres. Certainly it is virtually impossible to remove all traces of blood from boots, stitching, lace holes and so on. The report found the lack of any bloodstaining, especially on the boots, convincing evidence that this murder could not have been committed while wearing these clothes.

The gloves

Amongst a goodly collection of gloves were found a pair of blue fingerless gloves and a pair of brown woollen work gloves. Fibres from these gloves matched in some respects those fibres found on the hammer, the tools found in the Ford Sierra and odd fibres found on the dead man's clothing.
The presence of fibres from Frank's gloves on the body clothing could have indicated that the gloves had touched the body. However, for that to be established there would have to be fibres travelling the other way - from body clothing to the gloves. There was no evidence of such fibre transference, and the Crown itself told the jury that the presence of these fibres was more consistent with secondary transfer rather than any other agent. Considering the fact that there was regular contact between Frank and Raffle, both socially and through working together, it was no great surprise that fibres from the clothing of one should be found on the other.
The court heard testimony from the manager of a large textile mill in Yorkshire where the material of these gloves had been produced. Together with the forensic report for the Defence, this evidence pointed out that the fibres could have come from a great number of sources other than Frank's gloves, the fibres being found in socks, gloves, trousers, duffel-coats, scarves, hats and thermal clothing of all sorts.

The body warmer

A green body-warmer was also taken from Frank's house, in the pocket of which was found a single pine needle from a Sitka Spruce, the same type of tree as is found in Kielder Forest. Again, a great deal of importance was attached to this fact until the following facts were established:

Frank's car

During a forensic examination of Frank's car, bloodstaining was found in the boot. Subsequent tests found it to have come from a bird - substantiating Frank's claims to be a regular and successful poacher!
This was the extent of the forensic evidence against Frank. As the forensic report for the Defence pointed out, providing Frank had been in contact with Raffle that day, or had used the hammer in connection with his work, any fibres found on the hammer or on the clothing of the dead man can be considered as entirely innocent.