Dean Gallagher's riding career is under threat after the Champion Hurdle-winning jockey revealed today he has again tested positive for a banned substance.
In a statement, he said: "I wish to announce that I have tested positive for a banned substance that may signal the end of my riding career.
"It is well known that I have put a great deal of effort into my ongoing recovery but life is not always as easy as it often appears".
PA
