Our overnight temps are fine now and forecast to stay that way for at least the next couple of weeks, so I left everything standing outside overnight for the last couple of days of last week, and this weekend I took the plunge and planted out everything - French and runner beans, squash, courgette, tomatoes, plus cucumber, melon, aubergine, sweet and chilli peppers in my tunnel. I've been putting this stuff in and out every day for weeks now, much longer hardening off than I normally do, and they all look really good and strong. I've got fruit on my squash and courgette plants and I'll be picking courgettes by the end of this week (Parthenon). And the tomatoes, peppers, aubergines, cucumbers, even melons have all got flowers on too. It's the best my tender stuff has ever looked on planting out, so this lousy spring might just have turned me into a convert for keeping them in a bit longer.
Trouble is, if you don't have a heated greenhouse, it's very difficult to keep bringing a lot of plants in and out every day for any length of time, and when the plants are getting bigger it takes up an awful lot of space. My utility room has been stuffed with plants and littered with bits of compost for weeks.
What I have struggled with this year is peas (but not mange tout) and potatoes. I've sown the peas 3 times now and the germination rates have been very poor, and the early spuds are still like little toy mini spuds 14 weeks after planting.