I was an O2 mobile customer when O2 supplied my broadband, so I was always able to call their customer service team for free.

This was useful because the phone line in the house at the time was not the best owing to some "creative" alterations to the wiring inflicted upon it by the previous inhabitants.

O2's support team were always very efficient and NOT an Indian call centre to boot. And for this, O2 deserves credit.

The connection speed was always pretty good. I don't think they provided many if any other services, not that it bothered me.

Would recommend.