"Andy" wrote in message
...
On Sep 29, 12:16 am, "Richard J." wrote:
wrote on 28 September 2010 08:13:05 ...

There's also the problem of deciding where in central London the
southbound line say would change from being 'up' (which is normally
but not always TO London) to 'down' - away from London.

Where does the up/down orientation change on Thameslink in central London?

Up and Down swap at the former Farringdon Junction, where the line to
Moorgate used to diverge. Services from the north to Moorgate ran Up
all the way, services to Blackfriars still change designation to Down
at the site of the junction.

-------------

However...

Network Rail published plans to change the designations in January this
year, to come into force April 10.

The up/down line changeover is to be at the north end of the platforms
where the third rail ends. Removal of a signalling interlocking equipment
room at the junction has also led to changes to the signalling areas of
control.

Paul S