WHBM.
Thanks for the list. Wouldn't it have been great to see the Beverley they bought in any of the pastel liveries? Or then again...perhaps not? Interesting to see that GAZEB is listed as 'lilac' but looked pink in the photo I discovered, could well have been the sun angle I suppose. I do remember the JetRanger but not that it flew very much! GAWBL went to Cambrian and was a regular at Liverpool operating the Heathrow service, (CS101 etc)? The 1-11's used to do engineering ground runs on the 'pans' on the Southern edge of the old main apron. Sometimes up to take-off power! So much for noise complaints!
Airline Engineering at Luton used to be fairly regularly visited by Donaldson 707's, (I believe they had two) and...getting slightly back on thread...they don't seem to have been mentioned yet?
Spiney
P.S. Vintage ATCO..I bet DC could have answered your question!