Sav
Earlier in the thread you posted several pictures of Pope John Pauls visit to the UK, specifically pictures of him meeting/greeting BCal helicopter crews. In searching the web for some older pictures of ex Ferranti Bo105s I came across this web-site dedicated to the memories of ex BCal staff.
BCal Reunited
A request here may illicit more information on the names of individuals in the photos. Moreover, there are two pictures of what I believe are ex Ferranti BO105s on the same website........
BCal G-BATB
BCal G-BFYA
Hope this helps further.
Best Regards
Hofmeister