Join Fiona Bruce and the Antiques Roadshow team when they film at the National Trust’s Morden Hall Park, London, on Sunday, June 2.

The Roadshow brings together a team of the country’s leading authorities on arts and antiques to offer free valuations for your family heirlooms or car boot bargains.

Each Roadshow event attracts around 4,000 people, who come along to find out if they might own a missing masterpiece and find out the priceless history of their items. Whether it’s a £100,000 painting or a £5 cup and saucer, everyone gets an expert opinion on their treasure.

Around 15,000 items are valued at each show by Roadshow experts from which around 60 are filmed for inclusion in the two shows made at each location.

Last year the specialists discovered unseen masterpieces by Mexican artist Diego Rivera worth £100,000, jewels from the Titanic and a unique Brooklyn Dodgers baseball with a value as extraordinary as its story.

Antiques Roadshow is one of the BBC’s most popular factual programmes and around six million people regularly watch on Sunday evenings.

Fiona Bruce has presented the show for the past 12 years.

She said: “So much of what you see on the Antiques Roadshow is about the story of an object and its owner as much as about its value. We are never short of people bringing along items that tell a hell of a story, which can be very exciting, poignant or funny, sometimes, all three. Or it can tell us something about ourselves.

“Even after all these years people still have the most amazing things tucked away in their attics and garages and I can’t wait to see what they pull out of their bags and trolleys in 2019.”

Some of the most fascinating finds to come to light over the years include wristwatch owned by Lawrence of Arabia, which went on to sell for £34,000, a chest eventually proven to have belonged to Queen Anne and a leather jacket worn by John F Kennedy and valued at up to £300,000.

Many objects featured on the Roadshow have been found in strange places such as diamond jewels found sewn into an upholstered chair and two important paintings discovered by the new owners of a house in their loft.

On Sunday, June 2, Antiques Roadshow will be filming at the National Trust’s Morden Hall Park. This tranquil oasis is situated beside the River Wandle, just five minutes’ walk from the London Underground.

Robert Murphy, the series producer of Antiques Roadshow, said: “We’re thrilled to be bringing the Roadshow to Morden Hall Park.

“You never know, it might just be your item that turns out to be something very special… and potentially very valuable!”

Entry to the show is free and no tickets or pre-registration is required.

Visitors can also share their stories about the special items they are bringing along. Email shareyourstory@bbc.co.uk with your name, address, telephone number, a description of the item and how you came to own it and a photo.

Alternatively, write to Antiques Roadshow, BBC, Whiteladies Road, Bristol BS8 2LR.

More information, frequently asked questions, and parking information can be found at www.bbc.co.uk/antiquesroadshow or on the show’s Facebook page.