Well, that's not right, despite what someone's added to Wikipedia, he didn't start presenting the lottery on a regular basis until 1998, very much as a "safe pair of hands" after the disaster that was Red Alert. Genome confirms that.
As far as I know, his first presenting job was a not very good show called Only Joking for ITV in 1992. This was a bit interesting because both the BBC and ITV launched shows at the same time involving members of the public telling jokes. The Beeb has Joker In The Pack, as seen on UKGameshows - http://www.ukgameshows.com/ukgs/Joker_in_the_Pack
- and, as mentioned there, ITV had Only Joking with Bradley. I think Joker in the Pack was a licenced format the Beeb had acquired from the US, and ITV nipped in with their lookalike version first as a spoiler. Both of them flopped massively and I remember Only Joking was shoved off the network very quickly and the various regions shoved the remaining episodes out wherever they fancied it, I remember Bradley going on Gimme 5 to promote it and having to embarrassingly say that Granada were showing it at 11.30am on Saturday mornings.
After that he shuffled around telly and got various guest spots, you can see on Genome he appears on various quizzes and variety shows, and he and Joe Pasquale got a one-off special on ITV in 1994 which wasn't very good at all. But I remember Bradley saying one of his greatest moments was Bob Monkhouse coming up to him and saying "I really hope you and Pasquale get the success you deserve".
His first game show Midas Touch wasn't very good either and I'd suggest it was Wheel of Fortune that was his big break, he sent it up a bit and revitalised the show a bit, after Nicky Campbell had pretty much played it straight for the previous decade.