Class 7 licences
Another snippet for your book: John Crewdson and Gill Aldam (Helicopter Hire then based at Elstree) also got, or applied for, a Class 7 licence. They were planning to use WG30s and definitely had one - G-KATE - and I think another. John was sadly killed in an Alouette II when it crashed in the Wash whilst filming. Gill is alive and well and has remarried. We did some training with John's son who I think was also called John and I assume that he is still around somewhere.