Having just been made aware of this forum (which is terrific!!) I have the following comments on the previous exchanges which might hopefully be of use:
The Firefly fuselage marked "277" was actually WB298 (not WD).
Wrecks & Relics listed the remnants of "TT20?" and "VZ66?" Three TT-serialled Sea Hornets are known to have ended up at Minworth Metals at Castle Bromwich, these being TT205, TT208 and TT209. It is a good bet that these ended up at Failsworth as scrap does seem to have moved between yards from time to time. I have no record of TT207 at Failsworth (doesn't mean that it wasn't, though).
As for VZ66-serialled Sea Hornets all bar VZ664 (which became an instructional airframe in 1954) were sold for scrap on 22 July 1957, which doesn't help with the identification of this particular wing section.
If anyone has any further details of these aircraft then I'd love to hear of them. Similarly any logs of Naval aircraft (all the Fireflies etc) and the dates they were noted would be hugely welcomed if you could contact me off list.
co-author "Fleet Air Arm Fixed Wing Aircraft Since 1946", Air-Britain (due early 2004)