Over 4,000 UK Scouts are withdrawing from a World Jamboree over extreme heat and worries about facilities.

The British group of 4,500, the largest in attendance, is moving from a camp site at Saemangeum to Seoul, the Scout Association confirmed.

The US and Singaporean teams are also pulling their members out of the event.

South Korea’s government said it was sending 60 more medics and 700 service workers to maintain the toilets and showers, with many countries staying at the site for the next week.

The jamboree, described as the world’s largest youth camp, gathers Scouts from around the world every four years, each time in a different country.

Most of those attending are aged between 14 and 18, and 155 countries are represented in South Korea.

This is the first jamboree since the pandemic and is due to run until 12 August.

Coaches of British teenagers have started arriving back in Seoul - about 120 miles (197km) from the campsite - and they will spend the next week in hotels.

The UK Scout Association said young people and adult volunteers had begun “settling into their accommodation” and the Jamboree experience would continue in the city before returning to the UK on 13 August as planned.

The BBC has been told that some scouts are sharing five to a room, while up to 250 are sleeping in the ballroom of one Seoul hotel due to a lack of available accommodation.