In message , at 01:52:47 on Fri, 10
Jun 2011, Richard J. remarked:

Use the TfL Journey Planner and untick the Tube option.
http://journeyplanner.tfl.gov.uk

That produces some very awkward bus journeys across Central London, and
an end-to end time around 2 hours.

It's an hour and 36 minutes when the tube's running (change at Finsbury
park), after a 3/4 mile walk to Walthamstow Central tube (maybe the OP
can find a bus for that).
--
Roland Perry