A team from housing association Wandle won this year's Better Bankside pancake race at Jubilee Place in Borough Market.
The business improvement district has organised a pancake race every Shrove Tuesday since 2006.
Firms taking part in the contest included Eight Associates, the Marketing Store, Alan Camp Architects and Union Street Partners.
Mayor of Southwark Cllr Charlie Smith donned his running gear to take part in the competition before changing into his mayoral robes for a photo opportunity with the winning team.
Whilst the Bankside race is the longest-established event, this year a record number of other pancake races were held elsewhere in SE1, including the London Bubble Flipping Marvellous Pancake Race at More London and a three legged race at the Where the pancakes are restaurant.
Contests were also held at the London Bridge Farmers' Market on the Guy's Hospital campus.