BBC One HD is due to launch at 7 this evening, providing a simulcast of the London version of BBC One and running alongside BBC HD.
At the moment regional variations of programmes such as the news will not be available on the channel, but will continue to be available on BBC One in standard definition.
Current affairs programme The One Show will be the first show to be aired on the new channel, which was first announced in May.
The launch is part of the BBC’s strategy to make HD the norm for all its channels.
It is aiming for the majority of all BBC One titles across all hours to be broadcast in true HD by 2012.
BBC One HD will be available on Freeview channel 108, Freesat channel 50, Virgin Media channel 08, and Sky channel 143.
BBC HD will move to Freeview channel 54, Sky channel 169 and Virgin Media channel 187.