Hi Legs11
You could try the Wiltshire Records office
http://www.wiltshire.gov.uk/macnn/heritage/html/wsro.html I would drop them an email and see what they say. If they are a good as Sussex them you may get lucky.
Failing that try your local LDS, they may have a copy you could borrow or contact the FreeReg county coordinator for Wiltshire (Clive Henly
clive@henly.f9.co.uk) and offer to transcribe it for him.
Adrian
