Nigel,
As these were the only records that survived that I hold from Eddie Taff and Bill Smallwood, I would have to hazard a fairly reliable guess, and I appreciate for histories correctness, that there has to have been more M85's manufactured as it was a very good seller for PH. Had they won the MOD contract which the L96 finally did, with the M85 coming second, we would probably have had a more reliable number because the company probably would have survived!!!