Just one more comment. We are a different area to you (we are Norfolk) but we have the same seasonal problem with blight.

For cucmbers, our outside ones rarely do well but we had a few last year - may have been "marketmore". I think a problem is I want to get them out too early and they really do not like a chilly wind.

This year, I'm trying one called something like "Green Burpless". Other years, at least in the greehouse, Passandra has done well. I've also grown the round ones "Chrystal lemon?""