The location of the leak was identified and operations at Wytch Farm remain suspended, the company said in a statement.

"The spill remains contained with four floating barriers in place and clean-up operations are progressing well...," Perenco UK's Wytch Farm General Manager Franck Dy said.

Perenco UK said it was investigating the cause of the spill, in consultation with the environment agency and local authorities.

The company estimated the quantity of the spill at less than 200 barrels and that the liquid was 80% saline solution and 20% crude, Jim Stewart, chief executive of Poole Harbour Commissioners, an independent body that regulates activities at the harbour, told BBC Radio on Sunday.

Perenco UK produces about 40,000 barrels of oil equivalent a day, with Wytch Farm accounting for about 14,000 barrels.

(Reporting by Gokul Pisharody in Bengaluru and Shadia Nasralla; Editing by Shilpi Majumdar)