According to rumours printed today by The Sun, a film could be shot as early as 2013 - although the show's writer, creator and star, Miranda Hart, has also revealed initial plans for a spring 2014 stand-up tour, which would likely take a significant chunk of 2013 to develop.
Broadcast of the series had been expected to begin around Christmas or early in the new year, but The Sun's report claims a "Christmas cliffhanger" will set up the storyline for a film.
An unnamed source told the paper: "Miranda has been a really popular show and production companies have been floating ideas about making a film for a while. The third series sets a movie up perfectly, which is something she has always wanted to do.
"She would keep all the stars of the sitcom on board, and get some of her famous friends in for cameo roles too."
Whilst no potential plot has been mooted, the source did add: "The idea of casting a film has really got her excited - there's a long list of men she quite fancies finding love with."
Miranda would join the ranks of a recent revival in British comedy films. After a long period of drought, the format was revitalised just last year with the smash-hit success of sitcom spin-off The Inbetweeners Movie. Celebrity Juice star Keith Lemon recently released his own feature film, whilst other potential productions include a silver screen outing for Absolutely Fabulous.
The Sun's source noted: "There is a lot of money in it. The DVDs of the TV series have done brilliantly, so it's a good bet for backers."
Here's a clip from the Miranda Sport Relief special, filmed and broadcast earlier this year.