Career
Radio In addition to his television work, he presented British Broadcasting Corporation Radio 4 children"s magazine programme Go 4 lieutenant and co-presents Big Toe Books (previously The Big Toe Radio Show), for British Broadcasting Corporation 7. Other appearances In pantomime, he played Idle Jack in Dick Whittington at The Anvil Theatre, Basingstoke, between November 2005 and January 2006. From December 2007 to January 2008, Harwood appeared at The Assembly Hall Theatre, Tunbridge Wells as Buttons in Cinderella.
In April 2008, he appeared in a musical version of Beauty and the Beast as Jangles the court jester at the Central Theatre in Chatham, Kent.
In December 2008 to January 2009, Harwood starred in Peter Pan at the Pavilion theatre in Bournemouth. In December 2009 to January 2010, he starred in Peter Pan at the Grande Theatre in Blackpool.
On 1 and 2 August 2009, he and Gemma Hunt presented a British Broadcasting Corporation Proms concert at the Royal Albert Hall in London entitled "EVOLUTION! A Darwin-inspired extravaganze for kids" (Prom21 and Prom23), during which they interviewed special guest Sir David Attenborough. Guest appearance on CBBC show TMi, 14 November 2009, alongside Little Boots.
In 2010 he appeared at the Lichfield Garrick Theatre for their Christmas production of Peter Pan playing the lead role and co-starring with his father, comedian Barnaby.
From 2 December 2011 – 8 January 2012, Barney played Muddles in Snow White and the Seven Dwarfs at the Churchill Theatre in Bromley. In December 2013 Barney played "Peter Pan" at the Theatre Royale in Nottingham, alongside David Hasselhoff and Su Pollard.