United Kingdom, July 19 -- S Club 7's Jon Lee had a secret addiction to crystal meth which almost killed him.

The 43-year-old popstar admitted that he secretly suffered a number of "psychotic episodes" caused by his addiction to the deadly drug, after the band broke up.

He told the Daily Mail: "I didn't even recognise myself at that time. Sometimes, in the midst of one of the psychotic episodes where I'd be smashing my flat up with a hammer, I'd catch sight of myself in the mirror and say: 'What the f***?'

"I'd be standing there, holes in the walls around me, cuts all over my knuckles, my eye swollen from where I'd been punching myself in the head."

At one stage, Jon was sectioned after his worried neighbours called the police.

He sa...