A HEART transplant survivor is taking on the ultimate challenge by walking 4,500 miles around the coastline of Britain to raise money for the British Heart Foundation (BHF).

Kieran Sandwell, aged 45, hit the 3,000-mile mark on his epic journey earlier today, posing for a selfie in Milford Haven.

Kieran, from Hertfordshire, is currently walking the Pembrokeshire coast path, and has been travelling for 198 days so far.

His 'trail of two heart' marks the end of a long battle with heart disease after having a heart transplant eight years ago.

To celebrate his new lease of life Kieran has set himself the challenge of raising £20,000 for the BHF over the next year.

Milford Mercury: Kieran Sandwell.

After setting off on February 1, 2017, from the BHF office in London, he began walking the coast of Wales at the end of November but ill health forced him to take a break just before Christmas.

Kieran is now back on track and walking around Wales during February and March.

This week he’s covering Martin’s Haven to Tenby.

There are 375,000 people in Wales living with heart and circulatory disease.

To support Kieran is calling on his journey, click here.

Kieran said: “My second heart has enabled me to do so much and I’m urging the public to help me support the BHF’s ground-breaking research by sponsoring me or walking with me.”

Adam Fletcher, Head of BHF Cymru, said: “Last year over 9,000 people in Wales lost their life to heart and circulatory disease, devastating the lives of the close friends and family they leave behind.

"We urgently need more people to help fund our life saving research, so if Kieran has inspired you please do help power his steps and donate.”