The RNLI has issued a tidal safety warning ahead of the bank holiday weekend.

This comes as the charity celebrates the success of a new water safety initiative that has led to no lifeboat call-outs at Sully Island.

Since the end of May, the RNLI has been running a water safety initiative at the tidal cut-off hotspot of Sully Island.

A dedicated team of water safety volunteers have been patrolling the rocky causeway between Sully Island and Swanbridge Bay.

They have been engaging with the public about the dangers of the tidal cut-off in this area of the Bristol Channel, which has some of the highest tidal ranges in the world.

Anna Snow, a volunteer with the water safety team, said: "The causeway becomes submerged quickly and can leave people trapped on the island or swept into the water if crossing the causeway as it becomes submerged.

"We’re not here to be the fun police and stop people exploring and having a good time.

"Our role is to help inform people about the potential dangers of making the crossing at the wrong time – and how that could quickly lead to being cut-off or ending up in the water in a strong tidal current."

The volunteers are on patrol on high-risk days, including bank holiday weekends, when a lot of people are out enjoying the coast.

Ellie Smith, from the RNLI water safety team, said: "So far this project has been a great success, we’ve seen zero lifeboat call-outs to Sully Island during the patrol times which is fantastic and really shows the positive power of water safety intervention."

Lee Obrien, an RNLI volunteer, added: "This August bank holiday weekend, we are urging people to think very carefully about their safety, especially before setting off on a coastal walk or to spend time at the beach."