Disqualified Godolphin trainer Mahmood Al Zarooni has reiterated his regret in a written statement issued after the British Horseracing Authority banned him for eight years.
First and foremost, I would like to apologise to his Highness, Sheikh Mohammed, as well as all those involved in Godolphin and the public.
I accept it was my responsibility to be aware of the rules regarding prohibited substances in Britain.
I can only apologise. I have made a catastrophic error.
More top news
Marsie Taylor, 96, helped plan the 1944 D-Day landings for over a year, eventually leading to the liberation of France in World War Two.
Key campaign claims by both sides in the EU referendum have been strongly criticised in a scathing report by a cross-party group of MPs.
The 12 finalists will battle it out on Saturday night - but who is your favourite to win?