01:05AM, Thursday 02 January 2014
Susan Bailey, 71, was chairman of the event, which was suggested to her as a fundraiser for the 1984 Olympics by Joe Moore - a leading figure in carriage-driving in Britain.
The first event attracted 20 participants and raised £2,000.
Susan said: "After the success of the first event Joe suggested we do it every year for other charities."
Causes supported over the years include the air ambulance, Great Ormond Street Hospital and the Alexander Devine Children's Hospice Service.
"I particularly wanted us to reach the quarter of a million pound mark when the event reached its 25th year and we did it," said Susan. By then 100 people were regularly competing.
Susan, who lives in Winkfield, worked in human resources but has loved horses all her life.
She chaired the organising committee of Windsor Park Equestrian Club and is still a director of Guards Polo Club.
"When I learned I was being honoured I just thought 'I wonder who put me forward'," she said.
"I have had to try and forget about it for six weeks but I have celebrated this week."
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