At the risk of being an anorak I have looked up the history of XM330 in the fantastic book by Lee Howard and others, isbn 978-0-85130-304-8 Fleet Air Arm Helicopters since 1943! Savoia you really NEED this book!
XM330 as mentioned was indeed a Handling Squadron at Boscombe Down and was painted in dark blue with a very jazzy white lightning flash full length.
She did lots of trials here and abroad including SS11 - hence the mudguards - and lots of other armament trials through 1962 and onwards. SAR at SBAC show inSeptember 1976 hence the underslung foam generator.
Last airworthy Wessex HAS 1. Avpin explosion on start in June 1982 and retired June 1983.
All the above from Lee Howards book that is amazing. If you have ever had a "moment" in a FAA helicopter it is all here - just look up your name at the back and off you go!
Last edited by bast0n; 8th Mar 2013 at 11:20.