UK film industry worth £4.6bn in 2011, report suggests
It said the industry has "grown significantly" in the last 20 years.
The number of UK films has grown from an average of 43 in the 1980s to 136 in the 2000s, according to report author Oxford Economics, a global forecaster.
The economy was worth about £1.5 trillion in 2011, with UK film accounting for 0.3% of GDP last year.
The GDP is a measure of the value of goods and services produced in the economy.
The report said UK box office receipts hit a record high last year of £410m, boosted by films including Harry Potter and the Deathly Hallows: Part 2 and Sherlock Holmes: A Game of Shadows, plus independent films such as The King's Speech and The Inbetweeners Movie.
'Long-term growth'
The most recent previous report on the film industry, also by Oxford Economics found that, in 2009, the core UK film industry contributed £4.5bn to UK GDP.
The 2012 report suggested the 2011 figures demonstrated that "despite the on-going recession the UK film industry is thriving".
It also stated the number of jobs the industry sustains has risen from 100,000 in 2009 to 117,400, while tourism generated by films depicting the UK was estimated to have contributed about £1bn to UK GDP.
"With a significant upward trajectory over the last 20 years, the overall picture for the UK film industry is of continued long-term growth," said the report, adding: "Growth outstrips the UK economy as a whole; there is significant and continued investment in infrastructure."
By comparison, another major contributor to the UK's creative industries is the music industry, which last year made £3.8bn, according to PRS For Music, which represents songwriters, composers and publishers.