An investigation by BBC Radio 5 Live Investigates reveals problem gamblers are able to continue betting online even when they sign up to a national self-exclusion scheme. More than 50,000 people have signed up to the GamStop scheme which allows addicts to ban themselves from online betting platforms. But 5 Live Investigates recruits the son of a problem gambler to sign up to the scheme to test if it works. After banning himself, Adam Bradford, whose dad David lost more than £100,00 by gambling online, is able to sign up to a new gambling website by changing just a few small personal details. GamStop say they're 'deeply concerned' by the findings. The programme also returns to Grimsby where a year ago a producer self-excluded from all the high street bookies in the town. But he was able to place bets on high stakes fixed odds betting terminals (FOBT's) in all but two of the betting shops he was banned from. A year on, the programme returns to Grimsby to find out if anything has changed.