First post so be nice!
(And thanks to previous posters for many many deals I've got)
Computer active is 3p for 3x monthly copies and, as long as you cancel direct debit, no futher payment due. We tend to do this every month or so and cancel the DD and phone them up for good measure and its hassle free to do. Make a note in your diary though.
Loads of other mags, and now possible 20% cashback via quidco (okay - on 3p its nothing but if you add on other mags it helps). We've just spent £5.50 for around 14 magazines in total which will sort us out for summer holidays,
This has been posted before but ages ago and since expired.