Hi All, i found a place to have new seat foam cut to shape & size for my Avon jockey seat.
I ordered a Chair cushion shape, which is a rounded top so the hight goe's by the straight edge bit (10cm) i put, X Length at 84cm width 31cm the hight should work out about 18cm at thickest point. It's been ordered in reconstituted foam (firmest)
Total included delivery £26
Took me months to find someplace.
www.anyfoam.co.uk