Well the elastic for the clips behind the seat had gone slack so off to local haberdashery store and purchased 500mm of 15mm elastic for the princely sum of 27p.
20 minutes later all replaced including cursing threading the needle a couple of times on the sewing machine. Refitted and the front edge is now tensioned again. Job done.
20 minutes later all replaced including cursing threading the needle a couple of times on the sewing machine. Refitted and the front edge is now tensioned again. Job done.