Contacted the following companies:
frego.ch
profistora.ch
Had a prompt reply from Frego, but they say you have to replace the cloth. It is only the stiching that has gone (disintigrated in the Sun).
Alternatively, will look at repairing this myself using a tool used to repair sails:
https://www.amazon.co.uk/Scoolr-Sewi...ateway&sr=8-15
Anyone else any other suggestions.
Edit: just done a google search and found a few other compaines, so hopefully will be able to find someone to do this at a resonable cost.