Environmentalist Amber Nuttall braved 236 miles of the Thames’ choppy waters on a paddleboard to raise more than £10,000 for charity.

Her week-long journey, which began on Sunday, October 11, took her from the river’s source to the sea at Southend in aid of the Blue Marine Foundation .

She passed through east London on Saturday, October 17, paddling through the Thames Barrier at Woolwich.

She revealed to the London Evening Standard she had only fallen in twice and now had her sights set on paddling the Channel.

She said: “The nicest thing in the whole length of the Thames were all the people I met and spoke with from dog walkers to lock keepers and people with houses on the Thames, calling out firstly, ‘What are you doing?’ and secondly ‘Are you mad?’.

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“A lot of people don’t know what paddleboarding is.”

Amber inherited her passion to protect marine life from father Sir Nicholas Nuttall and has since become a charity ambassador.

The cash raised will help fund an expedition to investigate the little-known waters around Ascension Island, the northernmost reach of the British Oversees Territory of St Helena, Ascension and Tristan da Cunha.

Amber said: “It really spurred me on in this challenge to know that every penny I raise will go towards this expedition.

“It’s very exciting that they might discover new species.

“And I would be thrilled if Ascension was declared the biggest marine reserve in the Atlantic.”

Amber is still accepting donations here.