There are two Christmas services broadcast from King's in 2010:
A Festival of Nine Lessons and Carols: the traditional Christmas Eve service created in 1918 and broadcast since 1928. You can listen to it live at 3pm on BBC Radio 4. It is also broadcast at 2pm on Radio 3 on Christmas Day, and at various times on the BBC World Service. In the United States the service is broadcast by American Public Media and Minnesota Public Radio.
Carols from King's: a televised carol service recorded earlier in the month. The service will be shown on BBC Two on Christmas Eve at 6.15pm (Scotland) or 6.45pm (the rest of the UK).