I have found a reference to BG England but they only came up as a Dealer listed in a Triumph instruction book, you will be familiar with manufacturers listing local parts suppliers, usually in the back pages of their manuals. Unfortunately the listing only gives the address and I'll need the phone number. Not a major problem as I can make one up but the photo is so blurred I can't even see how much text there is, and I need to establish if this was a bike from their Luton branch and indeed, if they actually had one! Val Emery probably does have an artwork person, as they have asked for details of the text. The overall shape and style is pretty clear and not fancy with no pictorial elements so hopefully not a big task! (Or so I thought...)
REgards, Mark