I'm here.......
The Bristol area resignalling extends to replacing the existing interlockings and trackside equipment (excluding signals which will be reused where possible). This is due to the existing equipment not being AC Immune and hence not immune to 25Kv AC electrification. The exception to this will be the equipment in the Cogload Junction to Flax Bourton (125 mile post from London) area which will not be changed as it is outside of the electrified area. The track layouts will not be changed. This is therefore a part resignalling and part re-control project.
The bases for new trackside equipment cases and rooms are being installed now but the detailed design and build of them is somewhat behind schedule.
The 'new' signalling will be controlled from Thames Valley Signalling Centre (
TVSC» ) at Didcot (which is going to be renamed at some point in the future). All existing Bristol signals that are numbered Bxxx will be renumbered BLxxxx. Track circuits will be replaced by axle counters. The existing 'X' signs that divide the platforms into two parts at Temple Meads station will in future be divided by proper 'back to back' signals.
Bristol Panel will be abolished and demolished to make way for the new terminating platforms but currently this is planned as a second stage of the project.
It looks as if Swindon Panel will be abolished either in October 2015 or over Xmas/New Year 2015/6. Watch this space.