The claimants are said to have suffered “permanent long-term neurological injuries” as a result of negligence by the football authorities.

In a statement to the BBC at the time, the FA said it was “not able to comment on ongoing legal proceedings” but that “we continue to take a leading role in reviewing and improving the safety of our game”.

More than 8,000 pages of medical records and pleadings have been submitted by the claimants before the case management hearing on Wednesday.

Solicitor Richard Boardman, who is representing the 35 former footballers in the litigation, said: “Today’s hearing is the latest milestone in our campaign to seek justice for those who were not protected by the football governing bodies from sustaining brain damage.

“The sheer scale of the problem is illustrated by the fact that we have filed more than 8,000 pages of medical records and legal documents for the first 17 football claimants alone.”

The players or their families initiated their legal claim in correspondence two years ago.

This includes the family of 1966 World Cup winner Nobby Stiles, who died in 2020 and had prostate cancer and advanced dementia.

His brain was diagnosed as having chronic traumatic encephalopathy (CTE) – a form of degenerative disease dementia that is believed to be caused by repeated blows.

A similar action was launched by former rugby league and former rugby union players in 2022.

Research in 2019 showed ex-footballers were three and a half times more likely to die of dementia than the general population.