Vulcan QRA information request

I have been looking for quite a detailed run through of the procedures used by the Vulcans in the late 60’s and early 70’s when they were on nuclear QRA before it was passed over to the RN.

The best I have got so far is in the ‘Fobs Kid’ book by Barry Goodwin, but I wondered if anyone had anything more? Or any pointers for places to try? The majority of the V-bomber books tend to focus more on their conception, although they do have some info.

If anyone can help it’d be much appreciated,

Thanks

MH