Sandra, is it a 'zip' in type? You can contact Grangetown upholsterers they do replacement hoods and replace rear windows on soft tops too. Not sure if they're still going but definitely worth looking into. Good prices and excellent service. Did an Astra one for me a few years back and replaced my friends entire canvas on his Peugeot for under £200.
Also Auto trimming in Redcar do a good job too.
Hope this helps
Chris, March 2016
