A boy who developed a sleeping disorder caused by the swine flu vaccine has received £120,000 in damages.

Josh Hadfield, 10, from Frome in Somerset, developed narcolepsy after receiving the Pandemrix vaccine six years ago.

In 2013, lawyers launched a class action on behalf of 38 Britons - including 19 children - who developed narcolepsy after having the vaccine.

Scientists from the former Health Protection Agency (HPA) said there was evidence of a link between the Pandemrix jab - manufactured by GlaxoSmithKline (GSK) - and narcolepsy in children.

HPA figures suggested one in 55,000 children vaccinated - about 20 in the UK - are thought to have developed narcolepsy.

Josh was awarded the money after appealing against the Government, which had initially refused to pay as he was not "severely disabled" enough.

He also suffers from cataplexy, which is related to narcolepsy and affects muscle control, but he had shown no symptoms before being vaccinated.

His mother Caroline Hadfield told the BBC Radio 4's File on 4 that winning was a "huge relief".

She said: "It will help secure Josh's future. It's just a shame we had to jump through this amount of hoops to get this far."

She said her son was "coping" and had to have "one to two sleeps" during the school day.

She added: "Josh has had to work incredibly hard because he misses lessons due to sleep and medical appointments."

Families are entitled to £120,000 tax-free through the Vaccine Damage Payments Scheme run by the Government, but only if they can prove "severe" disability.

Solictor Suzanne Williams said: "To succeed in the appeal, we had to satisfy the tribunal that he had a 60% disablement or more and they, in fact, concluded that he was 72% disabled based upon his present symptoms.

"They were also critical of the medical evidence provided by the Secretary of State, which they considered had not taken into account the whole picture."

A spokesman for GlaxoSmithKline said: "We remain committed to carrying out additional research into the potential role of Pandemrix in the development of narcolepsy.

"We are also supporting ongoing work from other experts and organisations investigating reported cases of the condition."

The Pandemrix vaccine was given to high-risk groups, including children and those with asthma, diabetes and heart disease, at the height of the 2009/10 swine flu pandemic.

Across Europe, about 31 million people are thought to have received the jab.

Narcolepsy is a rare but serious neurological disorder that affects about 31,000 people in Britain. The condition can cause massive disruption to sleep and daily life.