There’s a couple of contenders for this title – the ferry service at Woolwich and that at Hampton.
Ferry services linking the north bank of the Thames at Woolwich North to the south bank at Woolwich have operated on the Thames since at least the 14th century.
While they were previously commercial operations, in 1889 a free passenger and vehicle ferry service started operation. By the early 1960s increasing demand saw the paddle steamers retired and the ferry service upgraded to a roll-on/roll-off model. The Woolwich Ferry service, which has been run by numerous authorities over the past century, is currently run by Transport for London.
Another contender for the title of London’s oldest (still operational) ferry service is the Hampton Ferry, a pedestrian service, which operates on the Thames about a mile west of Hampton Court Bridge between Hampton on the north bank and Hurst Park, Molesey, the south bank.
The ferry service, which was first used by fishermen and agricultural workers, dates back to 1514 and was incorporated by statute, making it one of the oldest British companies. The ferry, which costs £2 for a single crossing, operates seasonally from April to October.