British and Irish racing authorities announce 'zero-tolerance' anti-doping initiative 

Racing chiefs will combine resources to formally continue stepping up levels of out of competition testing across both jurisdictions.

Almost 250 samples were taken from more than 120 horses that are entered for the Cheltenham Festival in an operation across 14 training premises in Ireland. File pic: INPHO/Morgan Treacy

Governing bodies in Britain and Ireland have pledged to pull together to enforce a "zero tolerance" policy on doping in horseracing.

The British Horseracing Authority and the Irish Horseracing Regulatory Board will combine resources to formally continue stepping up levels of out of competition testing across both jurisdictions.