He took over running the yard in 1970 on the retirement of Jack Waugh , to whom Sir Mark was assistant .
Sir Mark trains at the Newmarket yard , Heath House ( which traces back to Tregonwell Frampton , England 's first professional race horse trainer ) .
Mark took over running the yard in 1970 on the retirement of Jack Waugh , to whom Sir Sir was assistant .
Sir Mark trains at the Newmarket yard , Heath House ( which traces back to Tregonwell Frampton , England 's first professional race horse trainer ) .