Three lengths of adjustable steel shelving and four metal brackets to go. Expensive stuff, 'Sapphire' brand I think.
Two steel uprights x 240cm (7' 11") and one x 190cm (6' 6"), the brackets 14" wide. The supports could probably be cut down to shorter lengths.
Final offer - I've put these outside my house now, come and find them or message me if you want them. Finders keepers, first come first serve. (Tried freecycle, but the woman from Crouch End said it was too big for her car.)