can i line the trenches of my veg patch in the greenhouse with black binliners?!

Clay is not rubbish, clay is good. . You just have to work it. If it`s too dry to work, then give it a good soaking the night before digging it, and DO NOT WALK on it afterwards.

I think you should just put growbags or split open 70l compost bags in the bottom of the clay trench. Then you could even take them with you when you go!

Simple. What a good reply. Why didnt us lot think of that 

cheers savbo, really don't know why no one else thought of that!!!!
Thankyou, i'm setting off now!!!!

Perhaps because we are not all lazy gardeners.

Yes, David, if this was my house and i was staying here then i would prepare the ground well enough for me to do my gardening. As stated before, not my house, no money, quick fix solution as have only just got the greenhouse! thanks for your input anyway, but the problem has been solved.

Thanks to everyone for your useful input and ideas!!!!

I'm not planning on moving, i have to move! if i could i would be staying here and i would buy the house, but it's not mine and the land lord wants it back!!!
As explained, if i was staying here, i would be doing all i could, in fact i would be completly redesigning the garden and having a massive plot! I have been out this afternoon and got some large bags of compost to put into the trenches!
don't know what i'm planning on growing in there though!