My understanding is that there is no charge (activation or otherwise), but that it does lock you in to a new 12 month contract. I'd be pleased if someone who has actually gone through the process can confirm that, though.
Moved (with trepidation turned relief) to BT Infinity 2 for upload speed. Happy BE user for several years.
Edited by StephenTodd (Fri 02-Aug-13 20:24:49)