New No4 MKII's...consecutive serial numbers

[Peter Laidler]

You are getting VERY warm DrWeiler. The UF serial number prefix was a requirement for the UK Military and on the No4's in particular, for the RAF who were to be armed with No4's for many years thereafter. This was due to a forthcoming (at the time) shortage of the new L1A1's due to industrial strife at Fazakerley. Strife the eventually turned into suicide.

Don't forget that until the 70's the Navy, RAF and ASrmy were TOTALLY separate forces with their own procurement and logistical systems