[5] Judd appeared in Busted's music video for their 2003 single "Crashed the Wedding", after which he joined McFly following auditions.

In May 2006, McFly starred in the teen comedy film Just My Luck with Lindsay Lohan and Chris Pine, which was released in the US on 12 May 2006 and in the UK on 30 June 2006.

On 8 May 2009, McFly appeared on the Channel 4 show Hollyoaks, playing a cameo version of their song "Falling in Love" outside the SUBar.

On 6 July 2012, Judd appeared on The Million Pound Drop Live along with Michelle, his partner he only met in person once they were on stage.

In December 2013, Judd appeared on Celebrity The Chase with Chris Bisson, Gareth Thomas and Naga Munchetty.

On 19 November 2010, Judd appeared on and won a special Strictly Come Dancing episode for Children in Need, where he partnered Ola Jordan and beat Rochelle Humes from the Saturdays.

On 23 March 2012, Judd performed again in BBC's "Strictly Come Dancing Underwater", as part of Sport Relief 2012, and was narrowly beaten by Chelsee Healey.

Judd met his wife, former Escala violinist Brittany "Izzy" Johnston, when she appeared as part of the string section on McFly's 2005 concert tour.

Judd and his McFly bandmates support the Brain Injury Rehabilitation Trust (BIRT) through the Eyes Alight Appeal founded by his wife Izzy.