For a current map (unfortunately with advertising) try streetmap.

There are several historical maps worth consulting. Try:

Charles Booth's poverty map (available from the London School of Economics).

Historic Southwark - nineteenth and twentieth century ordnance survey maps (available from the Vision of Britain site). The link will take you to the Southwark boundaries page. You will then need to click on the map just below the river and just left of centre. Then click on the 'B' of Bermondsey to enlarge. This will take you to the area of the walk and you can toggle between nineteenth and twentieth century maps at the bottom of the page.

exploring social action