I've just had Sky installed this morning, and then got straight on the phone to Customer Services. I had no hold in the queue for "changing" my package and the whole effort took me five minutes tops. The boxes are already bundled up along with all cabling that isn't hardwired ready to be collected next month.
I've yet to get a bank statement so will see if my ntlFreedom account has been cancelled but figures crossed it has - thanks to all who have helped on here and if all goes smoothly with cancellation, then it'll be time for me.
Cheers all, and keep up the good work!
Oz