Just a point of detail
Freddie didn't 'retire' to Ireland.
He moved there around 1979 when I was working at Corgi-Bantam and he was in his 40s and very much working; we had just published The Devil's Alternative.
I had a conversation with him at some 'do' or other and I think he was living (my old address book is at the office) in Bray, Berkshire which he loved but the move was an unashamed tax-avoidance switch.
Ireland had just introduced incremental tax breaks for artists/writers/film makers etc