Taken at Redhill.
S-58T (G-BCTX) in the foreground after being modified from Radial to Twin Pac in around 1974 or 75.
Wessex in the background, looks like a refurbished ex Nigeria aircraft destined for Skye or it could be ASWI from Great Yarmouth having had a paint job.
I can't work out what BCTX was doing there but I would date this picture in 74 or 75 or late 79 early 80?
So, Tail Take Off, am I right?