The Congestion Charge Zones include Barbican, Bloomsbury, Borough, Charing Cross, City of London, Clerkenwell, Covent Garden, Euston, Finsbury, Green Park, Holborn, Lambeth, Marylebone, Mayfair, Newington, Soho, Southwark, St James', St Pancreas, Waterloo and Westminster are the CC zones throughout London.
For most tickets, travel through Zone 1 is more expensive than journeys of similar length not crossing this zone. The zone contains all the central London districts, most of the major tourist attractions, the major rail terminals, the City of London, and the West End.