I could have asked Telewest for a change of number but as i hardly used the phone i cancelled it and decided to take up the TV service instead.
I used to live in an NTL area and i had the same problem with a number i was given which used to belong to a pub so i would get calls from breweries, i complained to NTL and they changed the number for me free of charge so i would think Telewest would do the same.
You got a good result there Peterjohno