Brown Properties:
Old Kent Road
Whitechapel Road
Light Blue Properties:
The Angel Islington
Euston Road
Pentonville Road
Pink Properties:
Pall Mall
Whitehall
Northumberland Avenue
Orange Properties:
Bow Street
Marlborough Street
Vine Street
Red Properties:
Strand
Fleet Street
Trafalgar Square
Yellow Properties:
Leicester Square
Coventry Street
Piccadilly
Green Properties:
Regent Street
Oxford Street
Bond Street
Dark Blue Properties:
Park Lane
Mayfair
The English Monopoly board game includes a total of 28 properties. Each property belongs to a specific color group and has its own purchase price, rent value, and potential for development. For example, in the Brown Properties group, Old Kent Road has a purchase price of £60 and a rent value of £2. If a player owns both properties in the group, the rent value doubles to £4. Similarly, Mayfair, one of the Dark Blue Properties, has a purchase price of £400 and a rent value of £50. These property details can be found in the official Monopoly rulebook or on the official Hasbro website.
References: 
 - Official Monopoly Rulebook: https://www.hasbro.com/common/instruct/monins.pdf
 - Hasbro Official Website: https://www.hasbro.com/en-gb/brands/monopoly