The Prince, 54, has found himself at the centre of a row over travel costs after it emerged he had used taxpayer money to fund helicopter and private jet journeys around the UK.
Prince Edward had spent at least £3,000 on a Royal helicopter to make a 67-mile journey to Bagshot Park, Surrey from Dorset after he competed in a tennis match, The Mail on Sunday reported.
The day before he spent an estimated £10,000 of public money getting to Dorset for his real tennis match.
But he seemed to brush off the furore as he was seen galloping around the grounds of Windsor Castle on Sunday morning, with his daughter Lady Louise accompanying him.
Louise is an accomplished horse rider, having previously competed in the Royal Windsor Horse Show.
The father and daughter were seen enjoying the castle’s beautiful grounds, which Prince Phillip had visited just a day earlier for an early morning horse and carriage ride.
The Queen’s Helicopter Flight is funded by the Sovereign Grant.
Paid by the Government from taxpayers’ funds, the grant was £76 million last year.
Edward’s week-long trip was part of a charity quest to visit each of the world’s 47 real tennis courts this year.
Last week, it was alleged that Prince Andrew used a private helicopter for a day of official engagements which started just 19 miles from his home – at an estimated cost of £5,000 to the British taxpayer.
The Duke of York, who has been dubbed ‘air miles Andy’ for his love of luxury travel, is under fire for flying his chopper for the official engagements when he could have simply travelled by car.
Last Thursday, the 58-year-old had breakfast at the Royal Lodge before travelling by helicopter to officially open the headquarters of the pharmaceutical company Bayer in Reading.
The first journey to Reading was 21 miles and was followed up by a second hop by air which covered just 19 miles.
At his second stop Didcot, Oxfordshire, Prince Andrew visited The New Space Showcase, a gateway to the UK space sector.