Door suppliers

Sue has written with a very specific request, which she hopes BC readers will able to offer advice on, but more broadly, there are lots of door suppliers around and restrictions on the types of doors suitable in the local conservation areas, so please use this thread to discuss door suppliers nearby. Here's what Sue asks:

Please could you ask your readers if they know of any good companies to refurb a 1900 door. I'm looking to get it draught-proofed, the glazing replaced with some nice stained glass (it's currently 3 different types of glass) and possibly some perspex/secondary glazing behind the double glazing to insulated it a bit more. Can any of your readers recommend someone to do this?