Display stand scrounge

I'm involved in an exhibition at the end of this month (25th-27th) with a few other photographers and we find ourselves short of display space in what is a fairly large, empty venue in Bracknell, Berkshire.

Does anyone know where I might be able to borrow some display stands in the area? They need to be able to hold prints up to A2 in size.

I'm more than happy to do all the fetching and construction and will guarantee their safe return.

Thanks in advance for any help.