This is a real long shot, I know, but does anyone have any idea where I might source either a concrete former to cast the shape myself or buy ready-made? We want to create a small folly which will look like the corner of a tumbledown church/gothic structure, say about 5' tall. The bricks aren't a problem, it's a 'gothic' stone-look ecclesiastical window frame that is, the type that would hold stained glass. The end result would have ivy climbing over it and be set in a heather bed.
We saw The Very Thing in the garden at Wookey Hole but I think they'd've noticed if we nicked it!!