Before moving into comedy, Miranda did office work in the charity sector - for Macmillan Cancer Relief and Comic Relief.
In 2006, Miranda was nominated for a BAFTA for 'Female Comedy Newcomer', for Hyperdrive.
In March 2008, Miranda filmed a pilot for her sitcom, Miranda Hart's Jokeshop, for the BBC.
In 2004, Miranda hosted Lipstick and Shopping, a platform for female comics.
Miranda contributed a Doodle to the National Doodle Campaign, which auctions off celebrity doodles for charity (The Neurofibromatosis Association).
Miranda has appeared on BBC Radio 2 in a self-penned comedy show, Joke Shop.
At 6'1", Miranda appears in the List of Famous Tall Women.
Miranda is often recognised as the woman in the Alpen advertisement who eats cat litter instead of the cereal. She appeared with fellow actress and comedian, Arabella Weir.
Miranda has taken several one-woman shows onto the comedy circuit including: Miranda Hart - Throbs, It's All About Me and Miranda Hart's House Party, though she is disdainful of the first show she took to the Edinburgh Fringe - Hurrell and Hart.
Miranda: A lot of women seem to be either very laddy in their stand-up, or don't want to break their pretty, feminine look. I think it is a shame that more women don't act the fool and let go a bit - that is what naturally appeals to me but maybe that is just my personality.
(on why it's great to work with Andy Riley and Kevin Cecil, the "Hyperdrive" writers)
Miranda: Yes, they are on set every day which is great. A real help. They are making minor adjustments right up to the last minute and are very open to suggestions and lines that come out of improvisations and rehearsals.
(on women as opposed to men in comedy)
Miranda: Less talented men get away with shit because the audience have instant confidence in them, whereas a woman has to work much harder to rid the audience of the instinctive discomfort they feel when a woman appears on stage.
(on performing at the Edinburgh Fringe)
Miranda: I've learnt that a show is just a show, not life threatening or a world changer, and as long as you don't really care out of proportion about it then Edinburgh is brilliant and I love it.
(on women in comedy)
Miranda: I think that women need to be funnier than men to break into the circuit. That is, I think men can get away with a lot more, and women couldn't necessarily pull that off.