I have just bought a new settee. One of the things that never crossed my mind to check was the type of legs on it - I have carpet. It got delivered with wooden feet - and I cannot budge it an inch on the carpet. I am no wimp having just manhandled my old one out the door for collection. So I am having to phone an upholsterer to come and put castors on it. Lesson learnt for the future and for any of you out there who are thinking of buying a new sofa (and live on their own!).
Bramble