The World Half Marathon Championships is set to become the first British sporting event to enforce blood and urine doping controls for the banned drug EPO.

The 10th staging of the event takes place in Bristol on Sunday.

And the International Association of Athletics Federations (IAAF) took the decision that it should impose the tests after reaching agreement with UK Athletics and UK Sport.

Several athletes have been caught up in an EPO scandal in recent months, including women's world champion 5,000-metre runner, Olga Yegorova.