And I'm pretty sure the 1975 hosting was an expedient response to the Troubles in Northern Ireland, and anxieties about possible attacks at Royal County Down, I think the originally-scheduled host. The Old Course had of course hosted the memorable (and rare) GB&I win in 1971, and since then the British venues will have been
1979 Muirfield
1983 Hoylake
1987 Sunningdale
1991 Portmarnock
1995 Porthcawl
1999 Nairn
2003 Ganton
2007 Royal County Down
2011 Royal Aberdeen
2015 Lytham
2019 Hoylake
which is an impressive listing.
Interestingly this year the (British) Amateur is going to Royal Aberdeen for the first time ever: this will be the third 'new' northern Scotland venue for the championship since 1985, and its one and only playing at Dornoch (Nairn in 1994 was the other). Rather more controversially, in 2019 the Championship is returning to Portmarnock, for the first time since 1949 (when it was won by the Ulsterman Sam McCready), although this will be the last R&A event to be held there unless and until the male-only membership policy at Portmarnock changes.