Charlie Sheen has sent a video message of support to a 14-year-old British boy who is fighting an epic battle against liver cancer.

Finlay Jefferson, from Leigh-on-Sea, Essex, was only diagnosed in April but is suffering from a rare form of cancer, fibrolamellar heptacellular carcinoma, which does not respond well to chemotherapy.

The brave teenager received two boosts this week.

First Piers Morgan, the Good Morning Britain presenter, made a surprise visit to Finlay's hospital bed and then Hollywood superstar Sheen sent him a video message.

Sheen told Finlay: 'I've heard what's going on and I'm so sorry for your troubles...please please keep fighting the good faith and regardless to what they're telling you, anything is possible.'

Finlay's half brother Jake Smith, 24, told Mail Online: 'He is a very kind and considerate child. Quite introvert but in the good way, he's never nasty to everyone, he loves TV, cars, films, superheroes, his dog Sasha, watching videos on youtube on his iPad.

'He's been so strong through this keeping his own spirits high as well as ours. One of his dreams is to be driven around in a Lamborghini Aventador as that's his favourite car.'

Jake told Mail Online: 'Finlay was only diagnosed in April. He had been coming home from school really exhausted and falling asleep at the dinner table. Then his hair started falling out.'

He was taken to the doctor and referred to Southend Hospital but eventually transferred to specialists at Kings College Hospital in London.

Eventually he was diagnosed as having fibrolamellar heptacellular carcinoma - a form of liver cancer so rare that it affects only 200 people in the whole world.

Finlay underwent chemotherapy in a bid to shrink the tumour on his liver but it has not worked.

Jake, his father John Smith, 51, friend Dean Fox, 55, and son Joe Fox, 21, are planning on climbing Mount Kilimanjaro in February to highlight such rare cancers and a fundraising page has already raised almost £3,000 towards the £20,000 target.

Finlay and Jake, pictured, larking about at London Zoo two weeks ago

Charlie Sheen (pictured) recorded the video message for Finlay after Piers Morgan mentioned the lad to him

Finlay (pictured) is a big fan of cars and his dream would be to have a ride in a Lamborghini Aventador