1. A tube map with extra lines showing where the walk is less than 500m.
http://rodcorp.typepad.com/rodcorp/i..._final_lm.html

2. A real to scale tube map, not the abstract that LU show.
http://www.kordy.dircon.co.uk/misc/alt-map.gif

Or just try

www.tfl.gov.uk/assets/downloads/centlond.pdf

Is the kordy one up to date?

Looks like part of the Jubilee line is missing.....

This Jubilee line is all there nothing missing, i travelled it last week!

But RM67's right about the kordy map. It's from before 1999.

You could have one in Burberry*:

http://www.robotwaronearth.com/images/chavmapfull.gif

or one with someone's notes on last trains and local pubs*:

http://www.lastrounds.co.uk/tfl/tubemap.html

or one with curves rather than angles*:

http://www.flickr.com/photos/anniemole/577049957/

or a "Germanized" one*:
http://www.myrtle.co.uk/art/untergrund.gif

*(until London Underground's solicitors get on to them, of course:
http://www.geofftech.co.uk/tube/sillymaps/)

LOL at 'Brent Kreuze' and 'Zuid Ruislip' !!!

ttt