Fire crews from Essex are taking part in a national challenge to find the UK’s most energy efficient service.

The Green Action Energy Savers competition was launched to support WWF’s Earth Hour, which takes place at 8.30pm on Saturday.

Thousands of landmarks, businesses and millions of people will all switch their lights off for 60 minutes, including the Taj Mahal and Tower Bridge.

Six fire stations in Essex, including Braintree, Weeley and Halstead are turning off lights and turning down radiators in the hope of being crowned the nation’s most energy efficient service.

The Essex crews are among 54 stations across five fire brigades – Avon, Essex, Hertfordshire, Greater Manchester and London – chosen to take part in the competition.

Tony Juniper, executive director at WWF, said: “We’re delighted by the efforts of Essex fire brigades to cut their energy use.

“WWF’s Earth Hour is all about making simple changes that can make a big difference for the planet. We hope that the great work of the firefighters encourages others to make a promise for the planet.”