BBC Radio (1986–1990)

In 1986 he moved to BBC Radio Nottingham where he briefly worked as a producer/presenter. This led to two simultaneous job offers from BBC Radio 4 and BBC Radio 1. He took both and worked for a year as a producer on Ned Sherrin's Sony award-winning Loose Ends for BBC Radio 4 before moving to BBC Radio 1 in 1988 where he became the station's youngest ever producer. At BBC Radio 1 he produced Simon Bates, Steve Wright in the Afternoon, Walters Weekly presented by John Peel's producer John Walters and created a new series Jonathan Ross Live from Ronnie Scott's, which was broadcast live from Ronnie Scott's Jazz Club on Fridays at 6 pm for 13 weeks. The script for the series was written by Danny Baker and the diverse range of guests included a memorable appearance by Robert Maxwell.

Channel X (1990–1994)

In 1990 he joined the recently formed independent production company Channel X to produce all of Jonathan Ross's shows. He produced over 200 live editions of Tonight with Jonathan Ross for Channel 4. In 1991 he produced Jonathan Ross Presents Madonna, which became Channel 4's highest rated entertainment programme of the year. Other credits include the innovative live comedy entertainment series Saturday Zoo which featured the live television debuts of the likes of Steve Coogan, John Thompson, Lily Savage, and Mark Thomas, and the factual entertainment hit Fantastic Facts for ITV.

Granada (1994–1997)

In 1994, he joined Granada Television's Entertainment Department where he developed and produced a wide range of comedy and entertainment programming including Lucky Numbers, The Shane Richie Experience, Stars in Their Eyes and The Mrs Merton Show. He was appointed Head of Development, and ran all of Granada's entertainment development across the full spectrum of the entertainment genre.

Lucky Dog Ltd (1998–1999)

In February 1998, he became managing director of Lucky Dog Ltd, a member of the Chrysalis Group. He co-devised and produced the adult comedy series A Many Splintered Thing starring Alan Davies for BBC1.

Granada (1997–2001)

In March 1999, he re-joined Granada Television to continue his creative collaboration with Caroline Aherne. Allen produced two series and two Christmas specials of the multi-award-winning The Royle Family as well as Harry Enfield's Sermon from St Albion's for ITV and an award-winning documentary Back Passage To India for BBC1, which involved dragging Caroline Aherne and Craig Cash unwillingly around remote Indian villages for three weeks.

Shine (2001–2003)

In January 2001, he was approached by Elisabeth Murdoch to become the founding creative director of the independent production company Shine. Allen was a key member of the launch team that secured the initial start-up financing. He quickly established the core creative divisions and overall creative strategy for the start-up company and recruited the core business affairs, finance, and creative personnel. He also established a talent incubator for comedy film directors in partnership with the UK Film Council and Film4.^[4]

BBC Television (2003–2008)

Allen was BBC's Creative Head of Comedy Talent and Comedy North. He joined the BBC as its comedy editor in February 2003, and was responsible for developing and producing all forms of comedy for the four main BBC broadcast networks and running the in-house production teams. He immediately established a department based in Manchester called Comedy North.^[5] He produced and executive-produced a diverse range of comedy programming including the BAFTA-winning sketch show That Mitchell and Webb Look (BBC Two), the BAFTA-nominated drama series Funland (BBC Three), The Omid Djalili Show (BBC One), After You've Gone (BBC One), Freezing (BBC Two), The Visit (BBC One and BBC Three), Massive (BBC Three) and four series of Ideal (BBC Two and BBC Three).

Big Talk Productions (2008–present)

Allen became CEO of Big Talk Productions in 2008. There he has produced two six-part comedies which were broadcast to record audiences and huge critical acclaim. The BAFTA-winning Rev. created by James Wood and Tom Hollander for BBC2 scooped four titles at the Broadcasting Press Guild Awards and was nominated at the BAFTAs for Best Situation Comedy. Him & Her, the most successful sitcom launch in the history of BBC3, written by Stefan Golaszewski and starring Russell Tovey and Sarah Solemani, picked up Best Comedy Performance for the two stars at the Royal Television Society Awards. Having acknowledged the loyal audience of Him & Her during its first and second series, a third series was commissioned.^[6]

Upcoming is a second series for Threesome (Comedy Central), a sitcom by Tom MacRae, starring Amy Huberman, Emun Elliot and Stephen Wight, and Friday Night Dinner (Channel 4), written and produced by Robert Popper and starring Tamsin Greig, Paul Ritter, Simon Bird and Tom Rosenthal. Both are currently in post-production.

Following their successful pilots, Chickens (Sky 1),^[7] written by and starring Simon Bird, Joe Thomas and Jonny Sweet, and The Job Lot,^[8] a series for ITV written by Claire Downes, Ian Jarvis and Stuart Lane, are both underway for a full series.

Currently shooting is the third series of Him & Her and Big Talk's first three-part contemporary drama The Town (ITV), written by Laurence Olivier award-winning playwright Mike Bartlett. In addition, miniseries A Young Doctor's Notebook, which Big Talk is producing for Sky Arts, and stars Jon Hamm and Daniel Radcliffe, has just finished shooting.

Allen is the Advisory Chair of the 2012 Media Guardian Edinburgh International Television Festival.