Terry Deary is an actor so he has adapted his own books as plays.

"Horrible Histories - The Mad Millennium" broke box-office records when it opened at Cardiff's Sherman Theatre in Summer 1999.

"Crackers Christmas", based on Terry's "Horrible Christmas Book" ran at the Sherman in December 2000. In 2002 Terry revived the play in a version for Barrow-in-Furness. Terry starred in that production himself.

"Wild Wales" was performed as a reading at the Sherman in 2001 and there are discussions about reviving it for 2018 in a Cardiff theatre and on tour throughout Wales.

In 2016 his original play "The Macbethy Curse" was performed at The Octagon Theatre in Bolton and in schools around England. He hopes to follow it with a new play in 2017. In September 2017 he begins work on a new educational theatre project with the same theatre company. This will explore thye stories of Charles Dickens in a fast-moving, dramatic and funny play.

Birmingham Stage Company Productions

Birmingham Stage Co's "Horrible Histories - Barmy Britain" has been produced in London's West End, (Garrick Theatre/Apollo Theatre), since February 2012 and is now the longest-running children's show in London's West End. 

For details of the 2018 tours look at the company's website where you can contact them 

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Is this any way for children to learn about history? Too right it is. If lessons were always like this, kids would be queuing up at the school gates every morning!”

Dominic Maxwell, The Times

“Horrible Histories brings the story of Britain throbbingly alive in this hilarious show! Bloody, marvellous stuff!”

When "Horrible Histories - Groovy Greeks" toured Britain in 2015/16 Terry recorded the voice of Zeus. For the final week, at Terry's home city of Sunderland, Terry was cast to appear on stage as Zeus.

In 2018/19 they will tour HH Terrible Tudors and HH Awesome Egyptians round Britain. Terry joined the cast when the tour arrived at Sunderland Empire in November 2018

This children's theatre company have the licence to present 'Horrible Histories' on stage around the world from Dubai to Hong Kong, Singapore to Sydney Opera House.