I too received the email inviting me to transfer to AnyTime with the special offer code.
I tried to transfer but there is a "problem" with the link and I receive an IAF Template Error which, after phoning them to enquire, is their billing engine which is giving them some problems.
They say they are working to rectify it but I have since received a 10 day extension to the cut off date for getting the special offer.
They will be shutting down Unlimited Time by the 31st August.
I have tried AOL in the past but hated it and at £14.99 p/m is £2 more than FS.