He entered the public eye when he appeared on the first series of the ITV1 television show Britain's Got Talent in June 2007 where he reached the semi-finals, and lost a place in the grand final.
[2] Pratt's debut in the West End was in Billy Elliot the Musical, where he played the role of Michael from 1 June 2009 to 28 August 2010.
[8] Before Britain's Got Talent, Pratt appeared at BBC Radio York's stand-up comedy event, More Front Than Scarborough, on 11 March 2007.
His performance received positive comments from all three judges, from Piers Morgan's "You've got brilliant, distinctive comic timing", to Amanda Holden's "You're a real star in the making, real showman, great confidence, you were fantastic", with the exception of Simon Cowell, saying "I think you're funnier than Peter Kay", but said that the singing was terrible but the comedy was fantastic.
The following day, the judges changed their minds after they realised they made a mistake, and decided to put Pratt and a beatboxing group called Crew 82, the two acts they previously rejected, through to the live semi-finals.
Pratt has also performed at the fair in Braeburn House, an old people's home in Moor Lane, Eastfield, alongside Bessie Cursons, who reached the final of the talent show, but lost to Paul Potts.
[13] Pratt's first major acting role was as nature reporter Jay in the CBeebies television series Green Balloon Club about the environment.
He voices one of the main characters in a cartoon based on the Wibbly Pig books by Mick Inkpen on CBeebies where he is the narrator, which started on 7 September 2009.
For the cartoon Fun with Claude, broadcast on the channel Playhouse Disney, he provided the voice for grizzly bear Boris.
He voiced the character in the 2008 early reel and was replaced in the main series by Kwesi Boakye and Terrell Ransom Jr.[2] The Scarborough Evening News on 5 June 2009 reported that Pratt had joined the cast of Billy Elliot the Musical.
In 2011, Pratt was cast as Nigel in the Stratford production of Matilda the Musical, and rejoined the West End, where he played Tommy.