Cable operator NTL has said it is reducing staff numbers at its UK call centres by 1,500.
The job losses will take place over 18 months as the group merges its 13 call centres into three bases at Manchester, Swansea and Bellshill in Glasgow.
The group announced the closure of its call centres at Winnersh, near Reading, Belfast, Glasgow, Brighton and Cambridge.
A small number of employees would be retained to provide support cover at four centres in Nottingham, Teesside, Luton and Coventry.