Ian, let me know whereabouts you'll be going & I'll sort you out a list of shops in the area.
There's virtually no Trad shops to be found in the UK unfortunately. Most, if not all, shops will carry some gear, but not much.
If you're after an ELB, pretty much everywhere will sell you one, but watch out for the quality. As with everything, if it's cheap, it'll be crap. The best 2 bowyers in England (for ELBs) are Pip Bickerstaff who sells through quite a few of the larger outlets as well as direct & Kieth Gascoine who only sells through his own shop (KG Archery) Kieth's place is well worth a visit (If you're anywhere near Nottingham) He does more Trad gear than anyone in the UK (Except possibly Border) Longbows, Flatbows, 1 & 3 piece recurves, the lot. They also have a 20yd indoor range that you can rent by the hour, if you wish.