The British Horseracing Authority's suspensions effectively rule out all 15 of Godolphin's injected horses for the entire campaign with just four and a half weeks left of the season on their return.
The racing body confirmed the punishment and explained the length of the ban:
The BHA has today informed Godolphin, the owners of the horses in question, that the 15 horses known to have been administered with either Ethylestranol or Stanozolol have been suspended from running in races for a period of six months, with effect from Tuesday, April 9, 2013.
The length of suspension reflects the period beyond which the BHA is confident that the horses in question can have derived no performance related benefit from the administration of these prohibited substances.
Certify, which ended 2012 unbeaten in four runs, was one of seven horses to test positive for Ethylestranol while Opinion Poll was one of four whose blood was found to contain Stanozolol.
More top news
Sue and Noel Radford have announced they're expecting another baby in September.
Nine months on, Stratford - where the referendum vote was 52:48 - remains as divided as ever over whether leaving the EU is a good idea.
A remarkably mild night with misty low cloud on the hills of Scotland, Wales and north-west England and further rain in places.