Just got a note today from Three.

2 changes :-

From October £1 a month extra for paper billing.

Also, and more of an issue for me - "From 23rd September 2008, any
calls lasting 60 seconds or less will be rounded up to a minute. After
the first minute, you’ll get charged for the rest of the call per
second. There’s no change for calls made before 23rd September 2008."

"If you have any questions, you can find the answers at three.co.uk/
billingchanges"

Sounds like a rip off to me....