I understand that I had a 14 day cooling off period. their web site states a 7 calendar day or 7 working day cancellation.
the web site states:
you will normally have a legal right to cancel your service without charge unless the contract was made at the company's normal business address (this was done over the phone) the cancellation period will normally be for seven calendar days or seven working days, depending on how and where the contract was made. however under industry-agreed processes you have the right to cancel without charge up until shortly before the transfer is due to take place, when transferring calls or narrowband line to or from bt.