Ken Scott
The BUA originals, SIW, SIX and TDJ, all had the "droop snoot" tips and were modified with the inbd chord extensions. The prototype, GARTA/OD-AFA MEA was modified too, it was the the 1st to get both as part of the flight test programme. It ended up that only the BOAC/BA/RAF K.2 didn't have either Chord growth and (sure it didn't) K/tips. BTW The chord growth was in the L/E panels not the main wing box /tapered torque box the wing box didn't "step" just the panels and therefor the Slats. Wing tanks were the same internal volume throughout all models.
The inbd Wing fences on the other hand are a nightmare of detail. The BOAC standards were further inbd and were fitted across the forward 1 and 2 tank access panel.There is a removable piece of fence for access to the tank panel.It also had the full chord fence outbd of rib 22. The Ghana A/W "fence" continued around the leading edge ending underneath the L/E panel. Some were slightly bent inbd at front . Never mind the Beaver tail styles over the production run!
Link for pics of..
VC10 G-ARTA
Go down till the BUA picture ,you can see the downward tip.