Purchased in a Boot Fair at Folkestone this weekend..
"Q - The Biography of Desond Llewelyn" by Sandy Hernu (published 1999, SB Publications).
I paid 50p for this book.
As you may expect from the title, it's mostly about "Q" and includes a full lst of all the amazing gadgets he supplied for Bond in each film. But there are several mentions of FF. There is a nice bit about DL being on holiday in Italy and being approached by a Yorkshireman in the ruins of Pompeii, who said "Eh, lad, aren't you the Colonel in Follyfoot, can you give y'autograph, please?"
It states that DL rented a cottage in Sicklinghall during filming. There is also reference to the 1995 "This is Your Life" TV appearance.
Haven't read it cover-to-cover yet but DL appears to have been very well cast in FF - as we all know!