Sash windows and replacement period front doors in London

[Brugmansia]

We're doing up our house and need the sash windows renovating. I've been googling and there seem to be loads of companies that do this. I've contacted a few to get quotes but was wondering if anyone had any recommendations.

We also need a new front door that suits the house, which is a mid-Victorian terrace. Ideally we would have a glazed door, possibly with stained glass. I think new would on balance be a better than reclaimed. Any recommendations for companies?