[ASnep]

The RSOD will certainly end, and there won't be a BBC One HD on channel 106 or 115 any more. The question is what happens to the capacity currently used by that version of BBC One HD. If, as widely assumed, it simply morphs into BBC One South East HD (the last region to switch), then technically it won't be 'removed', it'll just be renamed.

BBC One SE HD will use a different SID though.

So BBC One HD will cease to broadcast and BBC One SE HD will start as a new channel, wich just happens to use the capacity that was freed up by the closure of the RSOD-version of BBC One HD.