Thank you cactus69 merlotgran tiggypiro and janerowena though I was hoping that you'd recommend a fortnight in May when the greenhouse could be left to fend for itself! 
As we usually like driving somewhere in Europe I can see that we shall have to change our habits now. The produce from the greenhouse had better be worth it!
Thanks again.
Suggestions please for large pot.
Burnham: Is the Media Tempting Fate by Jumping the Gun?
