Thanks to Doug and also to Red with help. Seems my RTTL is the Mk 1B which has no. 2754 and I presume to be built from a Vic Smeed plan judging by some of the pics. My boat is numbered 2468 which I do not think is correct as this is too low to be in the range used for the RTTL's. The boat is a runner and only needs a general clean up/small renovation (like the mast/aerials) but could do with some fittings to bring it more like the original boat on which it was based. However I shall be concentrating initially on equipping the unfinished RAF crash tender I bought with it. I also have another 3 crash tenders, two of which are almost ready to sail (just need a few extra fittings for more authenticity) and the other (never finished by its builder) is in need of much rework/correction in places, strip/re-paint and then running gear installed. All 4 crash tenders (35" versions) do not have a mast but I have seen some good build blogs/info within the site to help which I will look at in more detail later.
Many thanks again. Lawrie