Lucy Montgomery

in several Radio 4 programmes, including the radio phone-in spoof Down the Line, Robin and Wendy's Wet Weekends, The Way We Live Right Now, The Museum of Everything, The Department, Another Case of Milton Jones, The Party Line, Harry Hill's Ghost of a Christmas Present, The Pits, the Torchwood story "Lost Souls" and Lucy Montgomery's Variety Pack. She produced a pilot for her own sketch show pilot for the BBC called The Full Montgomery which went on to run on Radio 4 for two series.

In 2005, Montgomery began writing for and performing in the comedy sketch show Tittybangbang on BBC Three. The sketch comedy series also stars Debbie Chazen and has had three series, from 2005 to late 2007. She was in The Armstrong and Miller Show on BBC One, and Bellamy's People on BBC Two. She has also been on The Law of the Playground and The Wall on BBC Three. She provided the voice of Destiny in Mongrels. Montgomery had various roles in The Life of Rock with Brian Pern and Harry and Paul's Story of the Twos. She was also the voice of Jeanine and other female characters in the Animated Puppetoon children's television series A Town Called Panic.

She voiced for the series Badly Dubbed Porn on Comedy Central.

She has starred in many stage productions, including leads in record-breaking and critically acclaimed Jerusalem with Mark Rylance at the Royal Court in 2009, the 2011–12 revival of Stephen Sondheim's Company at the Sheffield Crucible and Canvas at the Chichester Festival in 2012.

Montgomery appeared in the musical Viva Forever!, based on the music of the Spice Girls.