The Dengineers

The Dengineers build 11-year-old Ben a camouflaged adventure bunker.

Sibling rockers Sami, 9, and Nadia, 12, need their own soundproofed rehearsal room.

A massive Manchester United fan, 10-year-old Billy is in need of a football den.

Ella wants a den to escape the 35 bikes that are kept in every room of the house.

Jazz and Katelyn love dancing and want to put a dance studio in Jazz's mum's cellar.

Eleven-year-old Nathan wants a kitchen hangout, where he can practise being a chef.

The Dengineers transform a youth centre's outside space.

The Dengineers build 10-year-old Aron his very own Bollywood den.

The Dengineers come to the aid of Carrie, a 10-year-old from Leeds who plans to celebrate her red hair with a gingerbread house den.

The Dengineers build 11-year-old Lola an old-fashioned cinema den.

Needing to go to hospital means Rufus often misses out on the play adventures he loves.

The team build 11-year-old Joshua his very own DJ den and take a visit of the BBC Radio 1 studios.

The presenters look back at some of the amazing dens from series one and two. Here, Lauren revisits the survival, art, Hollywood cinema and DJ dens.

The presenters look back at some of the amazing dens from series one and two. Here, Lauren revisits the train, magical library, community and plane dens.

Helena needs a den to help her reach for the stars and fulfil her science dreams.

Will needs a rugby den to keep him in the game.

Joe and Lauren help build a den for the children and their siblings at Claire House Children's Hospice in Liverpool.

Ocean loves marble runs because they're like rollercoasters and one day he'd like to be a rollercoaster designer. He wants a marble run den.

Eight-year-old Oscar lives in Scotland and wants an Australia den so he can remember his Aussie hometown.

Eleven-year-old Amelie wants a Queen Victoria den where she can pass on her love of history to her friends.

Eleven-year-old Yusuf dreams of being in the army and hopes to one day to use his love of computer coding to become an army intelligence officer.

Cara, who has a form of dwarfism, has a sweet tooth and loves to dance. She needs a Sweetie Den where everything is the right height for her and she can disco dance!

Jilan, 12, has a passion for politics and wants to be prime minister one day. She needs a Politics Den where she can plan her campaigns in peace and quiet!

Rhodri can't go to his local cricket club as often as he'd like. Rhodri needs a den where he can practice cricket whenever he likes.

Twelve-year-old Luke is passionate about black history and wants people to realise how important it is.

Ten-year-old Caitlin wants to become a conservationist when she's older. She is passionate about teaching other people how important our world is, and needs a den where she can research.

11-year-old Maariya was scared of going underwater but overcame her fear a few years ago. Now she loves swimming, snorkelling and all things underwater.

Eight-year-old Nathan loves learning all about the rainforest from his dad and wants a den so he can feel like he is deep in the Amazonian rainforest every day.

Becca and her twin brother, Charlie, loved their new chinchillas. However, one of them was pregnant and gave birth and the only way to save them from being rehomed is to have a chinchilla den.

Twelve-year-old Ashley needs an opera-themed den so he can sing to his heart's content. He has Tourette syndrome and singing helps him to overcome it.

Ten-year-old Florence from Oxfordshire wants a cool hotel den so that she can relax, hang out with friends and be on holiday whenever she wants.

Doctor Who fan Adam wants a den where he can celebrate his favourite TV show and pursue his passion for drama.

Vilonu is a huge CBBC fan and dreams of becoming a TV presenter when she is older. She wants a space where she can write, film and edit her very own TV shows.

Gregor from Aberdeenshire needs somewhere to practise, store and maintain his bagpipes. He dreams of becoming a professional, but his pipes are too loud for the rest of the family.

Amayah from Sheffield is a huge fan of the weather and dreams of becoming a forecaster. She wants a den where she can study the weather and create her very own forecasts.

Ciarän from Barnsley is passionate about engineering and vacuum cleaners. He wants a den where he can create his own inventions, understand how things work and share his knowledge.

Ballroom dancer Harry from Dudley is a huge fan of Strictly and wants a den full of glitz and glamour to help him practise his dancing and store his trophies.

Bea from Hull and her best friend Stanley the sausage dog are seriously short of space. They need a den where they can learn new tricks and hang out together.

Siblings Nethuni and Abheetha are obsessed with optical illusions and want a den where they can work together to create new tricks to dazzle their friends.

History buff Hector from Wigan is a huge fan of William Shakespeare. He needs a space of his own where he can enjoy his hero’s works and write plays.

Angel from London is a top tap dancer who needs a space of her own where she can train properly, store her costumes and display all of her medals.

Duncan from Glasgow is passionate about protecting orangutans. He needs a den where he can learn more about these primates and how to help them, and share his passion with friends.