Where is Alex Langdon?

Do any other Brits of a certain age remember Alex? I really enjoyed his show 'Teenage Health Freak' around the beginning of the '90s. Unlike so many teen stars he seemed to be genuinely talented, naturally funny - and I remember that he was at the time celebrated as a young standup comic, too. For a very short time he was on the air and in the press quite regularly. Then he vanished without a trace - no record of him after around 93-95. Usually even the (very many) kid stars who step away from the business after early success leave some kind of trail. Given that he was also enjoying success on stage it seems particularly odd. So what on earth happened to Alex Langdon?