Mike Tindall spotted playfully pinching wife Zara on the bottom

We're used to Prince Harry and Meghan Markle's frequent PDAs but it's highly unlikely they'll ever be seen touching each other's bottoms.

But that's exactly what photographers caught Zara and Mike Tindall doing, during a recent equestrian event, west of London.

The 39-year-old was spotted playfully pinching his wife's bottom before leaning in for a kiss.

Zara, 37, then returned her husband's gesture – patting him on the behind.

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The couple's amorous outing took place at the Magic Millions Festival at Gatcombe Park, the estate owned by Zara's mother Princess Anne.

The three-day event is one of the most popular equestrian events of the season.

Zara was even dressed for the part, wearing a very low-key branded polo t-shirt and denim shorts.

The royal and the former England ruby star have recently become parents for the second time.

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In June, Zara gave birth to daughter Lena Elizabeth.

She is the fourth grandchild for Princess Anne, the seventh great-grandchild for The Queen and The Duke of Edinburgh, and second cousin to Prince George, Princess Charlotte and Prince Louis.

Their other daughter, Mia, four, was spotted playing with her cousins, Savannah and Isla Phillips, at the event the day before.

Zara and Mike tied the knot in Edinburgh in 2011.