Full implementation of an enhanced zero-tolerance policy regarding anabolic steroids use in Great Britain’s racehorses has been delayed until March 2015, the British Horseracing Authority (BHA) announced Dec. 19.

The reason for the delay is to allow more time to work with stakeholders, trainers, and owners, in particular, to clarify certain elements of the new rules and to secure consensus from all affected parties. Those elements include the definition of a "responsible person"—the individual with the responsibility for ensuring that a horse is not administered an anabolic steroid at any given time.

Those issues are being resolved in consultation with the Racehorse Owners Association, National Trainers Federation, and Thoroughbred Breeders’ Association. All three organizations reiterated their support for the zero-tolerance policy and recognized the need to delay the implementation.

"This is a complex issue and while we are disappointed not to be in a position to launch on Jan. 1, I have no doubt that we are doing the right thing in not trying to rush its introduction," said Jamie Stier, BHA director of race day operations and regulation