Buccaneer Wingtips - NutLoose
The Buccaneer S1 and S2 had wingtips of different shapes (seem to remember that the S1's were rounded and the S2's were more swept). When I was on "A" Sqn at A&AEE (as a nav, not a pilot) we did some handling trials on XV350, an S2, retro-fitted with S1 wingtips. This was during Jun, Jul and Aug 1984. Sad to say, I cannot remember the reasons for or the outcome of the trial but I don't think it came to anything.