Yes, Gray played Mycroft in the Jeremy Brett-led ITV series, and Blofeld in Diamonds Are Forever (having previously appeared in a minor role in You Only Live Twice).
Your question
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posted
Wow, I forgot I had this question up. No, neither Jaws nor Goldfinger are in the book of "Live and Let Die".
It's potentially because both characters died in the other movie they were (the same film) in that they don't show up in the film of Live and Let Die (the books were written in another order). One of them is replaced with a rather obvious substitute.