The Beckhams' surprise Sydney day out

The Beckhams kicked off their Australia trip with a trip to Glenworth Valley Outdoor Adventures. Photo / Instagram

They're famous for being one of the world's most glamorous couples, but Victoria and David Beckham have had a low-key start to their Australian trip.

The British couple, who are in Sydney to attend the Invictus games, visited Glenworth Valley Outdoor Adventures on Monday.

The New South Wales Central Coast recreation park revealed in an Instagram post they had played host to David, Victoria and three of the couple's four children.

View this post on Instagram

Glenworth Valley Outdoor Adventures was thrilled to host British royalty today 👑 . The *other* British royal family, the Beckhams, took some time out on their visit to Australia for the Invictus Games to enjoy a day of quad biking and abseiling at Glenworth Valley together with 3 of their 4 children today. . David, Victoria and 3 of their children enjoyed a day of adventure with an adrenaline-charged abseiling experience followed by a ride through Glenworth Valley’s bush trails and purpose-built circuit on our quad biking adventure. They even assisted our team with feeding some of our new Spring foals. . Our team certainly enjoyed hosting the Beckhams. The family were incredibly down-to-earth, friendly and appreciative and all thoroughly enjoyed their day with us. . Thanks for visiting us today @davidbeckham, @victoriabeckham & family! . (We are respectful of the family’s wish to refrain from posting the photos on social media. So you’ll just need to take our word for it that it actually happened...!)

A post shared by Glenworth Valley Adventures (@glenworthvalley) on Oct 22, 2018 at 3:28am PDT

The Beckhams enjoyed a day of abseiling, quad biking and "even assisted our team with feeding some of our new Spring foals".

"Our team certainly enjoyed hosting the Beckhams. The family were incredibly down-to-earth, friendly and appreciative and all thoroughly enjoyed their day with us," the post read.

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We’ve hosted plenty of famous faces in the past but yesterday’s visit from David & Victoria Beckham & family really is next level. . The Beckhams spent the day at Glenworth Valley Outdoor Adventures enjoying our incredible quad biking, abseiling and horse riding experiences on a family day out yesterday. . Want to bend it like Beckham too? Spice up your life with an unforgettable adventure on our scenic property located just 60 minutes north of Sydney on the NSW Central Coast. . More info & bookings: link in bio

A post shared by Glenworth Valley Adventures (@glenworthvalley) on Oct 23, 2018 at 2:35am PDT

One excited staff member Lauren Funnell managed to get a photo with Victoria and David, describing it on Instagram as "incredible experience".

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When I woke up this morning I had no idea that when I got to work today I would be told that the people I was taking on a quad bike tour was.... David Beckham and his sons!!! That's not even the half of it, POSH SPICE WAS ALSO AT GLENWORTH VALLEY, A FREAKING SPICE GIRL WAS AT MY PLACE OF WORK AND DO YOU THINK I HELD MYSELF TOGETHER?! I MOST CERTAINLY DID NOT!! I started shaking and crying I was that over whelmed, luckily I had Sarah and Robin who tried to calm me down and walked me down to meet her, told her I was the biggest fan of her and the Spice Girls and kindly asked if I could get a photo with her and she was so beautiful!! In that photo she's asking me if I'm okay because she could feel me shaking like crazy!!!!!!!! What an incredible experience I couldn't be more grateful and I'm going to spend the rest of my night in my own little heaven watching Spice girl vids ❤❤❤❤❤

A post shared by Lauren Funnell (@lozbangm8) on Oct 22, 2018 at 12:23am PDT

Meanwhile Wahroonga cafe The Butcher's Block also enjoyed a surprise visit from the Beckhams.

Victoria and David stopped by the cafe, located on Sydney's North Shore, on Tuesday for breakfast, the eatery reported on Instagram.

The celebrity couple's low key holiday comes as speculation about the state of their marriage continues to grow.

Victoria has reportedly been in tears over an interview David gave to The Sunday Project in which he labelled their marriage "hard work" and "complicated".

The Sun reports that David then released CCTV of a raid on their house last Friday to try and deflect attention from their marriage — but it backfired.

"She was upset by the comments he had made publicly. The raid is a totally separate issue," a source close to the couple told The Sun.

"She was already on a flight to Australia by the time the burglary footage was released — giving it to the media was totally out of her hands.

"It was meant to have an impact on the way the incident appeared — and deflected from the reality of why she was so upset. It has just added to the tensions between them."