Damien Lewis drives sheep over Southwark Bridge, London, in the 11th London Sheep Drive, in London on Sunday. James Manning/PA via AP

LONDON — Actor Damian Lewis drove a flock of sheep across the River Thames on Sunday in homage to a centuries-old tradition.

Lewis is among thousands of people granted the honorary title of Freeman of the City of London, which in medieval times came with the right to bring livestock across the river to market without paying tolls.

More than 1,000 freemen exercised that right on Sunday in the annual London Sheep Drive, many wearing black hats and red cloaks. Lewis wore his grandfather’s wool coat and carried a crook as he led the throng herding the animals over Southwark Bridge.

“It was fabulous,” said Lewis, star of “Band of Brothers,” “Homeland” and “Wolf Hall.”

Lewis was asked to represent the Worshipful Company of Woolmen, a trade guild dating back to the 12th century. He said he was pleased to be part of “this eccentric, very British day, honoring an old tradition.”

Manny Cohen, Master Woolman at the Worshipful Company of Woolmen, said the ancient sheep-driving tradition was revived about 15 years ago and has become a major charity fundraising event.

There are no plans to bring back other ancient freemen’s privileges such as the right to carry an unsheathed sword in public and to be escorted home if found drunk.