To pre-schoolers he is catnip and it seems mums are also falling head over heels for the goofy charms of CBeebies superstar Mr Tumble – appearing at next month’s Harvest at Jimmy’s. STAR EVENT looks at what he’ll be up to and the other youngsters’ attractions on offer.

As sex symbols go, he is an unlikely one. But, according to mums’ internet forums, Mr Tumble, aka actor Justin Fletcher, is sending housewives into a frenzy up and down the land.

The Parental Advisory Manual by Croydon broadcaster Natasha Desborough lists Mr Tumble – described as an “amiable mixture of Keith Chegwin and Billy Bunter” – as number four in the Top ten CBeebies mothers’ favourites.

Unless you have a child of pre-school age, the words Mr Tumble, Something Special and Justin Fletcher may mean nothing to you.

However, thousands turn up to see Fletcher’s live shows, hysterical parents beg him for an autograph in the street and Michael McIntyre, Simon Pegg and Gary Barlow are fans.

He is also making a name for himself on the festival circuit. Fresh from rave reviews at Camp Bestival in Dorset, the double Bafta award winner is appearing at next month’s Harvest at Jimmy’s alongside music stars including Eliza Doolittle, The Kooks and The Feeling.

“Mr Tumble’s performances are jam-packed wherever he goes. It’s going to be one of the highlights of the weekend so make sure you get there early to catch him,” stresses festival director Eloise Markwell Butler.

Mr Tumble, who as Fletcher was awarded an MBE, will be performing a live set down on the farm on Sunday as well as hosting a meet and greet.

“His show promises to entertain and enchant our little Harvesters with intelligence and panache. Trust us, this booking was strongly advocated by the smallest members of the Harvest team.”

It’s not the only attraction for children at the family-friendly festival at Jimmy’s Farm.

Following sell out performances across the UK, a musical adaptation of the the Gruffalo from the award-winning picture book by Julia Donaldson and Axel Scheffler is also coming.

“We love the Gruffalo. Youngsters can join Mouse on a journey through the deep, dark wood in this magical musical with songs, laughs and scary fun for children aged three and up and their adults. Just let your imagination run wild,” Eloise adds.

While the grown-ups are cooking up a storm with master classes from chefs including James Martin, Richard Corrigan and Mary Berry, youngsters can have a go in their own Kitchen Academy.

“Because of the demand in previous years, we’ve doubled the numbers of children’s workshops. Would-be Michelin chefs can see a host of recipes created including Eton mess, churros and chocolate, Sicilian chicken, vegi sushi and mini banofee pies.”

Harvest at Jimmy’s runs from September 9-11. For more details visit www.harvestatjimmys.com