On Apr 30, 4:14*pm, E27002 wrote:

The original Fleet Line was to continue east by way of Fenchurch
Street and then take a straight shot under the bendy Thames, crossing
it several times. *I think that plan was useful. *OTOH having a route
from Westminster, Waterloo and London Bridge is also useful. *Although
I think that the Jubilee should have taken over the NLL to North
Woolwich rather than Stratford. *The Stratford link could have been
achieved with a beefed up NLL which could have been extended south to
give yet another Thames crossing.

Correction

My aging memory is playing tricks. The original Fleet line was to
take over a small part of the East London Line.

Later, their was a short lived plan to extend the Fleet Line as the
"River Line". That is the one I had in mind. See the extract below
from Wikipedia.

An alternative plan was devised in the 1970s to extend the Jubilee
line parallel to the River Thames: this would have taken the line from
Fenchurch Street to Thamesmead via St Katharine Docks, Wapping, Surrey
Docks North, Canary Wharf, North Greenwich, Custom House, Silvertown,
Woolwich Arsenal, thence to Thamesmead. However the 'River Line', as
this extension was called, was deemed too expensive and construction
of the extension never proceeded.