Half-glazed back door (wood) (Portsmouth PO2)

I'm helping out a friend's elderly mother. The back door of her wood built conservatory desperately needs replacing. It is a non-standard size - 178cm x 77cm, which is proving extremely difficult to replace without having one custom made. That is way out of budget.

If you happen to have a door that could be adapted to fit, we would be very grateful.

I can collect from the Portsmouth and surrounding areas. Many thanks