Bluebell, I would not wait that long if they are a decent size. I planted aubergines in the greenhouse ten days ago (it is a bit warmer in there for sure) and they look so happy, last night it was 6C in there so not too cold.
Also it depends if your location is prone to frosts but tonight will, I think be only a slight ground frost which probably won’t affect the inside of a tunnel, and you can fleece over.
