Hi
I must admit that I hadn't initially spotted the Airtime Terms but only the Pay Monthly Tariff Terms (boo me), so thank you for pointing that out. I should note that in 11 days correspondence with o2 I haven't been directed specifically to the Airtime Terms, but I have requested the original t's & c's that I signed with o2 to see what's in there (not yet received).
I don't think it vitiates the arguments set out in my original post (now amended) entirely though. It should, at least from a consumer relations (or fairness) point of view, make little difference to the argument on what rate of subscription you pay out at: there is nothing in the contract (having now skimmed both the Pay Monthly Tariff Terms and the Airtime Terms, and assuming both sets are incorporated) locking the customer into a single rate. That is clearly not a contractual point, rather a point for Ofcom, but I'll think more on how to phrase that more formally. I do also think that a claim might lie under the UTCCR (
http://www.opsi.gov.uk/si/si1999/19992083.htm), and if that is the case the proper cancellation rate is the loss of profit on the contract, which will be significantly lower.
I think there may also be mileage in assessing how clearly the terms are set out in the actual contract signed - we'll wait to see what comes my way.
So, in summary, you're right that it's not as cut-and-dry as I first suggested, though there is still a good argument to be had to reduce the cancellation charge. On that basis, I intend to proceed with my initial plan.