BBC Olympic red button streams went live on freeview today.
Freeview channel 114 has the BBC Red button HD stream
Channels 600 - 607 have the BBC RB0 - RB7 in SD
Channel 608 has the RB 1 24/7 in SD
These require a retune.
The BBC red button olympic streams on Sky and Freesat are expected to be added to the epg tomorrow.
They are all available under add channels at the moment.