In The Night Garden is probably the only lullaby-filled children’s TV programme that has almost caused a parental riot. Why? Because when CBeebies once moved the tots’ favourite - featuring the adventures of Igglepiggle, Upsy Daisy, Makka Pakka and friends - from its bedtime slot to an earlier one, it prompted parent petitions, outrage, and a swift u-turn from the BBC.

Igglepiggle and co returned to their popular evening slot, and they’ve remained there ever since. In the Night Garden is the BAFTA award-winning series that’s been one of the Beeb’s most-watched shows for a whopping 12 years. Only 100 episodes were ever made - so toddlers and their parents around the country will be elated that, following 2010’s sell-out live touring show, In the Night Garden Live is coming to Watford Colosseum with a new show on Saturday, April 6, and Sunday, April 7.

Whilst the average grown-up might watch In the Night Garden and see a strange plot of cuddly characters apparently speaking gobbledegook, it’s all sophistically-tailored linguistics to captivate pre-schoolers. Andrew Davenport, the show’s creator, explains: “The characters speak almost entirely in play language, which is hugely important to language development. Children love the funny language and characters, and they love the whole fantasy of the Night Garden world - but I think, at the end of it, that it’s the comedy that draws them in.”

It might be all about having fun, but the makers of In the Night Garden Live took the responsibility of putting on what will be a lot of the audience’s first trip to a theatre very seriously. As Oliver Seadon, producer of In the Night Garden Live, puts it: “It’s such a heart-meltingly brilliant thing to hear the hysteria when Igglepiggle first appears on stage in front of his little fans - there’s a sort of glow of happiness throughout the theatre.

“My favourite ever clip that one parent shared on social media after seeing In the Night Garden Live had her two year old repeating over and over ‘Mummy, it’s amazing. Wow, it’s amazing. It’s amazing.’ As a theatre producer you can’t really wish for a better review than that.”

To guarantee that reaction with the latest show, the producers called in world-renowned theatrical experts to create the show, which is written by Bing Live writer Helen Eastman, with the puppets’ costumes designed by Tahra Zafar. A costumier, puppet and animatronics expert whose career spans the blockbuster Harry Potter and Star Wars films, Yet ask the creative whiz what character she’s most proud of working on in her three-decade-long career, and the answer isn’t Hermione or Obi Wan-Kenobe - it’s Upsy Daisy.

The always-happy dolly with red, pink and yellow hair who Zafar helped create for the original In the Night Garden TV show is, she explains, “just smashing. She’s a girl character who avoids the usual stereotypes”.

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The designer is passionate about the importance of children’s theatre under the shadow of cuts to the arts in schools. “Straitened budgets and a 1950s-style emphasis only on reading, writing and arithmetic means that creativity is being sucked out of schools,” she believes. “So it’s more important for us on In the Night Garden Live, and in children’s arts in general, to make sure we do our jobs really well. We have a responsibility to get everything to right to fill that gap.”

Zafar has spent months working on the design of the characters “because, to the children in our audience, In the Night Garden’s characters are like friends that they know really well.” And the show’s writer, Eastman says her biggest challenge was “creat[ing] something which will feel completely familiar to our young audience, who know the world of Night Garden and its characters intimately, but is also fresh and exciting.”

That sense of responsibility is echoed by Will Tuckett, the Royal Ballet stalwart, Olivier award-winner, and one of the Royal Opera House’s top choreographers, who is director of the new In the Night Garden Live stage show. “It’s not just the actual show that we want to be perfect for our young audience, but the whole theatre experience,” Tuckett explains. “We’ve trained all the front-of-house staff to make sure everything runs smoothly - after all, it’s not every show that sees hundreds of buggies arrive!”

Like the rest of the In the Night Garden Live crew, Tuckett knows he has “a really precious audience for Night Garden. For so many this will be their first time in a theatre; we want the families to go back to see something else, for the theatre to feel like a place they all enjoy going to, to see magical shows. It’s a big responsibility.”

Watford Colosseum, Rickmansworth Road, Watford, Saturday, April 6, 1pm and 4pm, and Sunday, April 7, 10am and 1pm. Details: 01923 571102 watfordcolosseum.co.uk