So here's the door from the outside looking in. The glass has enough of a texture that it allows in plenty of light, but you can't make out what's going when you peer through it. Nice to have the 'furniture' where we wanted it, though I regret not getting the door knocker that came with. The door bell is stuck on with double sided sellotape but hey ho, it seems to work OK. The door is sealed in properly so there's no draft.
UPDATE: Our heating bill dropped by about £30-£40 a month since getting this door installed! Also, in previous winters we'd need a little fan heater to warm up the room quicker as the radiators didn't seem up to the job - this year, we've retired the fan heater to the attic.