PB..... This Eastleigh spotter can confirm that there were two pairs of Belfast truss hangars at Eastleigh dating from WW1. They were demolished when the airport was developed into Southampton International Airport in the early 90s. At least two hangars were occupied for some time by Vickers Supermarine: marked as such. You are correct, one side of the northern pair did serve as the terminal building for some time and had a façade facing the airfield which did tend to obscure the origins of the building. Supermarines moved their flight testing facility to Chilbolton.... My Dad finished his RAF career at Worthy Down in 1946 instructing at Southampton UAS on Oxfords and Tiger Moths.....<br />