Reminder of the starter ...
Brown: Whitechapel Road and Old Kent Road
Light Blue: The Angel Islington, Euston Road and Pentonville Road
Pink (aka Light Purple): Pall Mall, Whitehall and Northumberland Avenue
Orange: Bow Street, Marlborough Street and Vine Street
Red: The Strand, Fleet Street and Trafalgar Square
Yellow: Leicester Square, Coventry Street and Piccadilly
Green: Regent Street, Oxford Street and Bond Street
Dark Blue: Park Lane and Mayfair
Train Stations (King's Cross Station, Marylebone Station, Fenchurch St Station and Liverpool Street Station)
Utilities (Electric Company and Water Works)
Income Tax
Community Chest
Chance
Super Tax
Go
Go to Jail
Free Parking
Jail / just visiting
I suspect that the Dark Blue have to be Marlow and Henley on Thames