I'm based in Leadenahll at St Paul's Catholic School. We have generally had reasonably good service for most of the time that I have been here (8 years), but recently since the academy was piggy backed off our internet connection, they preferred to blame us rather than check the issue out first. Turned out it was their issue all along. This behaviour of jumping the gun has become quite annoying. But I do agree with people, generally over the time their support, particularly from Neil and Chris, has been good, and the connection has been very stable.
Are there any reasons other than them mentioned to stay with the OU? I heard something about collaboration between schools, but really that doesn't depend on your ISP, so long as you have an internet connection.