Originally Posted by Globaliser

Following on from bisonrav's post, when you say you "can't do it online" do you mean that you have tried and the website won't do it, or you haven't tried because you think that the fee-free cancellation is only available by phone?

If it's the latter, then as bisonrav says try it online. The website functionality has been improved recently so that many cooling-off cancellations will go through for a full refund if you are within the first 24 hours. Only if you are not being offered a full refund will it be necessary to phone.

In any event, if you made the booking sometime during Monday afternoon London time, you will still have a lot of tomorrow in which to try.