Yes, but Ofcom* warns that when notifying customers of tariff increases, ISPs must make the terms and conditions ‘generally transparent and fair’.
* Ofcom is the UK communications regulator. For more information, advice and how to complain, visit the Consumer Section of the Ofcom website or call 0300 123 3333 or 020 7981 3040. Lines are open Monday to Friday from 9.00am to 5.00pm. For Textphone: 020 7981 3043.