I've used the company below for new doors, sample swatches are available free, a sample door is very cheap, sadly an odd size that'll fit nothing useful.
Massive range and many, many 'standard' door sizes but loads of the ranges can be made to measure. Measure the doors accurately, and the hinges centre positions (usually a telltale centre mark) then they'll drill hinges for £1 a hole, be careful as some doors are handed from the front design (arch etc) or if your existing door/hinges have offset hinge positions, so be just a bit careful ordering.
I've had 2 lots of fascias now and really pleased with quality and service.
https://www.kitchendoorworkshop.co.uk/