Clare Balding introduces the latest World Championships action from Hong Kong, with Sir Chris Hoy providing his considerable insight.

British rider Katy Marchant attempts to win her first World Championship medal in the women's sprint, having claimed bronze at the Olympic Games last summer. Olympic team pursuit champion Katie Archibald has won European and national omnium titles since last summer and could be a contender in the revised event in the absence of the all-conquering Laura Trott, while Andy Tennant will harbour hopes of at least emulating his individual pursuit world bronze medal last year. Show less