He is a dual-purpose trainer, saddling runners in both flat racing and National Hunt racing. He gained his only Classic winner with Mrs McArdy in the 1977 1,000 Guineas and his major successes have come with Lochnager, winner of the King's Stand Stakes, July Cup and Nunthorpe Stakes in 1976; and Peterhof, winner of the Triumph Hurdle also in 1976. His most recent British Pattern race winner came in the 2007 Winter Derby with Gentleman's Deal.
Mick's brother, Peter Easterby, was also a racehorse trainer and is now retired, and his nephew Tim Easterby is an active trainer. Mick's cousin Henry is the father of Irish rugby union internationals Simon and Guy Easterby.
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