Looks a nightmare scenario if all the local TV stations (if any actually succeed) have to send their output to BM to be MUXed with different "Commercial channels" to be sent back out to various Arquiva main Transmitters or little "town based" ones and, as it says in the COMUX blurb, be entered into the CORRECT EPG for that area which may be served by several main Tx. Makes BBC regional opt out stuff look simple!
Incidentally I saw a post somewhere wondering if BBC +1 services could cope with regional news and HD (if it ever spreads past main network feed)

I see some captioned colour bars have apeared on the Freeviw MUX (well in London anyway who are due the first "Localnews station"
I thought that was BBC London but the new one will of course be filled with adverts for things we don't want paid for by an increase in selling price - as opposed to a Licence fee providing multiple channels on TV and Radio!

Mike