[Stuart]

The regions and other new HD services won't appear one at a time, but one transponder's worth at a time. It's a big phased reshuffle of the existing BBC transponder space

I was thinking more that they would test them one at a time, then when they have enough to fill a transponder (five or six channels), they would push the button to make them live on the EPG.

Then move on to the next lot, and follow the same process.

Perhaps I've over-simplifying things as I don't actually have a clue how it's done.