"Abigail Brady" wrote in message
...
On Dec 16, 6:19 pm, Commuter wrote:
Being reminded over the removal of the river in Sept, how often do they
update the Tube map, and is there a criteria for changing it? I remember
a few years ago we had London Bdg changed from 1 to 2 circles.

Something like every 6 months recently. This is because the network
has been changing a fair bit.
.......

After this it might calm down a little. The next things that will
open after that I expect are the ELL extensions to Highbury and to
Clapham, not til 2011 and I believe 2012.

I suppose reopening Blackfriars will trigger a print re-issue as well?

Paul S