In message , Knotso
writes
who lives in Greenwich. Pondering the tube map from Heathrow, it appears
to be something like a 2-hour ride from the airport, to Green Park, to the
Jubilee line to South Greenwich.

It's "North Greenwich", which is nowhere near what the locals would call
Greenwich. The actual centre of Greenwich is between the Cutty Sark and
Greenwich DLR stations. But don't try changing from the Jubilee to DLR
at Canary Wharf because it's a long way to walk. It would be much better
to get an overground train to Greenwich (probably from Charing Cross,
walk from Embankment tube, having changed at Hammersmith).
--
Roland Perry