Basil Jet wrote:
Is this not just a case of the Cannon Street line being messed around by
engineering work?

I haven't followed the progress of the London Bridge situation, but those
lines have certainly suffered quite a lot from engineering related issues
associated with the Thameslink program. It might be the case that a
solution involving the Jubilee line to Canada Water and the East London
line to New Cross or alternatively Jubilee line to Canary Wharf and DLR to
an appropriate station between Greenwich and Lewisham is a more reliable
alternative.

Robin