The Thameslink Programme has announced ticketing changes for Southern Season holders and Oyster PAYG/Contactless card users from January.
Season ticket holders and Oyster PAYG/Contactless users will be allowed to use the tube between London Bridge and Elephant & Castle, Waterloo, Southwark (for Waterloo East), Embankment and Charing Cross. Also Cannon Street to Embankment and Charing Cross without extra charge.
Tickets will also be valid on Route 381 from London Bridge to Waterloo and Route 15 from Cannon Street to Charing Cross.
You'll also be allowed to interchange between Southwark and Waterloo East at no extra charge.