Hi Paul, nice to hear of your success.
What I do is grow tomatoes one end one year, the other end the next year etc, so a two year “rotation”.
Michael Kelly of GIY in Waterford, Ireland has grown tomatoes for about 8 years in a row and reports good growth.
Blight spores cannot live in soil or compost, they need living tissue to survive, so it’s not about blight. A problem can be nematodes that eat tomato roots, and one (expensive) solution to that is buying grafted plants, or learning to graft tomatoes onto pest resistant rootstocks.
Personally I don’t think that is worthwhile: just no dig, healthy soil with compost mulch.
For salads, I grow lettuce family one half and brassicas/other families the other end, then swap next winter.
And it’s better end to end, not side to side because of plant roots travelling under paths to a neighbouring bed – they go a long way.
