Paul Rigg wrote:

Well I'd like to know if they are taking St Mary's curve out ie the one
near WHitechapel that gives access to the District Line.

St. Mary's Curve is long gone. It was decommissioned in four stages
after the last service train on 22nd December 2007.

This concluded with a hoarding being erected in the tunnel approximately
50m East of the junction on the night of 12th January 2008, clear of the
District Line tracks.

Relevant Traffic Circulars are Issue 51 of 2007, 52/1 of 2007/8 and 2 of
2008 (still available on the LU Operational Standards site).

Cheers,

Barry