Philips Atlas of the Counties of England
The 1885-1918 Divisions are coloured, and there is lots of detail on this large map.
Other examples of this map are 1867 and 1885. More details on Philips's maps are on the Publisher's page.
Scale correct at 6 miles = 43.3mm, or 3.5 miles/inch, ie 1:220,000.
The Forest Gate to Tottenham link is present (opened 1894), but not the Corringham light railway (opened 1901) or Fairlop-Chigwell Loop (opened 1903).