The Royal Borough: Kensington and Chelsea

In this episode, we join the King at the annual Chelsea Flower Show where the pressure is on to create a garden in his honour, and meet the legendary party planner to the royal and rich, as he creates a lavish millionaire's party. We go behind the scenes at the hair salon trusted by Kate Middleton on her wedding day, and we're at the Royal Borough's car dealers, where cars go for twice the price of the average UK house.

Every spring, the historic – and peaceful – Royal Hospital Chelsea becomes the busiest place in the borough, as it plays host to the world-renowned Chelsea Flower Show. This year, there are 36 feature gardens, with the most prominent of all to be created by horticulturalist Dave Green. He's been commissioned to create a garden that both celebrates the new King, and commemorates the late Queen. It's a huge honour, but it comes with huge pressure. Dave has been in contact with the gardeners at Sandringham to get the choice of plants just right. But will it be enough to win the approval of the King when he visits the Flower Show for the first time as monarch?

If you're organising an event in Kensington and Chelsea, there's just one man to call on: legendary ‘party architect' Johnny Roxburgh. He's produced many a royal party, including Prince William's 21st. Now he's organising a party at the Chelsea Physic Garden for a local multimillionaire, and it needs to be planned with military precision, with gourmet canapes, a stunning marquee and vast floral arrangements. Every waiter will have a customised outfit inspired by French fashion designer Jean-Paul Gaultier, and there's even a dedicated make-up area where the waiting staff are primped with fake tans and tattoos.

The spotlight falls on Mosimann's, a fine dining club favoured by the royal and rich of Kensington and Chelsea. There is also a look at the staff at Chelsea Fire Station, who protect some of the most iconic buildings in the UK. Firefighters there are responsible for 1,500 iconic locations, including Kensington Palace.

In the Royal Borough of Kensington and Chelsea we explore hundreds of years of fascinating history while also delving into the lives and lifestyles of the wealthy and royal who inhabit the wealthiest district in Britain.

Monty, formerly Maisie, is a barge with royal connections. River homes agent Nick Austin shows us round this beautiful floating property that once hosted Prince Philip and whose signature gets a whole page in the visitor log book.

Just above the Thames is Holland Park, one of London's lushest green spaces, and back garden to some of the priciest houses in Britain owned by the likes of Robbie Williams and the Beckhams. Head gardener Owen Rogers is charged with upholding the legacy of Lady Elizabeth Holland, who introduced the dahlia to Britain in 1804, with an elaborate planting scheme that needs finishing in just one very hot day and he's feeling the pressure.

We step inside Peter Jones, John Lewis's iconic flagship store on Sloane Square, where we meet Ian, a passionate employee of 25 years, who shows us exclusive views from the rooftop where only staff have access and suggests that he has spotted many a royal there, rooting around the linen department.

We head down the Fulham Road to Bibendum, a 2 Michelin-starred restaurant in one of London's most beautiful examples of art deco architecture where the signature seafood platter is over £200 and Princess Diana dined with her celebrity pals in the 90s.

We head up to Sloane Street, crammed with luxury boutiques where jeweller Anabela Chan awaits a bespoke hat by royal milliner Awon Golding, and we learn about the street's famous resident Jane Austen, and an infamous connection to Oscar Wilde.

Finally, in one of the most dog-friendly boroughs in Britain, we attend a haute couture charity photo shoot, involving royal milliners hats with several four-legged friends, including the late Queen's favourite breed, a rescue Corgi.