The coroner at the inquest of a man who had a heart attack while diving in a Cumbrian lake has called for stricter checks of divers’ medical records.
Carl Morris died at Wastwater in January 2013 after getting into trouble at a depth of 164ft (50m).
The inquest heard the 39-year-old from Huddersfield, West Yorkshire was qualified to instructor level but did not have a valid medical certificate.
A jury in Cockermouth returned a verdict of death by natural causes.
Assistant coroner Robert Chapman said he would write to diving association PADI UK urging it to undertake more thorough checks of divers’ records.
The inquest was told Mr Morris was 6ft 1in (1.8m) tall, a heavy smoker and his weight fluctuated between 17 and 21 stone (107-133kg).
A post-mortem examination found he died from a heart attack as a result of a blocked coronary artery.
In a statement Mr Morris’ family said he was a “larger-than-life character who died doing the sport that he loved”.
His body was found after a two-day search.