Hello Bertie, Welcome to the Practical Caravan forum.
I feel so sorry for you having had your caravan written off and I'd strongly suggest that you copy the details of your introductory post to open a topic in the General section of the forum.
I'm sure that many forum members will be keen to offer advice on how to pursue your claim against the other caravanners insurance company, if their insurers will not pay then I'd suggest that it's up to them to make good the damage that has been caused to your caravan.
Many caravan breakers stock caravan windows, don't worry so much about the model that they were sourced from as the size because several windows would fit.
Premier Towing Centre in the West Midlands keeps a fairly comprehensive stock of caravan windows as does
The Caravan Centre in Wales, both do mail order.
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