What is British film?

The Kings Speech
Story: Tells the story of the man who became King George VI, the father of Queen Elizabeth II. After his brother abdicates, George ('Bertie') reluctantly assumes the throne. Plagued by a dreaded stammer and considered unfit to be king, Bertie engages the help of an unorthodox speech therapist named Lionel Logue. Through a set of unexpected techniques, and as a result of an unlikely friendship, Bertie is able to find his voice and boldly lead the country through war.
Director: 
Tom Hooper
Writer: 

David Seidler (screenplay)

Stars:

 Colin Firth, Geoffrey Rush and Helena Bonham Carter

Genres:

 Biography | Drama | History

Production Co:

 See-Saw Films, Bedlam Productions

Release Date:

 7 January 2011 (UK)

127 Hours

Story: 127 Hours is the true story of mountain climber Aron Ralston's remarkable adventure to save himself after a fallen boulder crashes on his arm and traps him in an isolated canyon in Utah. Over the next five days Ralston examines his life and survives the elements to finally discover he has the courage and the wherewithal to extricate himself by any means necessary, scale a 65 foot wall and hike over eight miles before he can be rescued. Throughout his journey, Ralston recalls friends, lovers, family, and the two hikers he met before his accident. Will they be the last two people he ever had the chance to meet?

Director: 

Danny Boyle

Writers: 

Danny Boyle (screenplay), Simon Beaufoy(screenplay)

Stars:

 James Franco, Amber Tamblyn and Kate Mara

Genres:

 Adventure | Biography | Drama | Thriller

Production Co:

 Pathé, Everest Entertainment, Cloud Eight Films

Release Date:

 7 January 2011 (UK)

Another Year

Story: A married couple who have managed to remain blissfully happy into their autumn years, are surrounded over the course of the four seasons of one average year by friends, colleagues, and family who all seem to suffer some degree of unhappiness.

Director: 

Mike Leigh

Writer: 

Mike Leigh

Stars:

 Jim Broadbent, Ruth Sheen and Lesley Manville

Genres:

 Comedy | Drama

Production Co:

 Thin Man Films, Film4, Focus Features International (FFI)

Release Date:

 5 November 2010 (UK)

Four Lions

Story: Four Lions tells the story of a group of British jihadists who push their abstract dreams of glory to the breaking point. As the wheels fly off, and their competing ideologies clash, what emerges is an emotionally engaging (and entirely plausible) farce. In a storm of razor-sharp verbal jousting and large-scale set pieces, Four Lions is a comic tour de force; it shows that-while terrorism is about ideology-it can also be about idiots.

Director: 

Christopher Morris

Writers: 

Christopher Morris, Simon Blackwell (additional writing)

Stars:

 Will Adamsdale, Riz Ahmed and Adeel Akhtar

Genres:

 Comedy | Drama

Production Co:

 Film4, Wild Bunch, Optimum Releasing

Release Date:

 7 May 2010 (UK)

Made in Dagenham

Story: In 1968, the Ford auto factory in Dagenham was one of the largest single private employers in the United Kingdom. In addition to the thousands of male employees, there are also 187 underpaid women machinists who primarily assemble the car seat upholstery in poor working conditions. Dissatisfied, the women, represented by the shop steward and Rita O'Grady, work with union rep Albert Passingham for a better deal. However, Rita learns that there is a larger issue in this dispute considering that women are paid an appalling fraction of the men's wages for the same work across the board on the sole basis of their sex. Refusing to tolerate this inequality any longer, O'Grady leads a strike by her fellow machinists for equal pay for equal work. What follows would test the patience of all involved in a grinding labour and political struggle that ultimately would advance the cause of women's rights around the world.

Director: 

Nigel Cole

Writer: 

William Ivory (screenplay)

Stars:

 Sally Hawkins, Bob Hoskins and Andrea Riseborough

Genres:

 Comedy | Drama | History

Production Co:

 Audley Films, BBC Films, BMS Finance 

Release Date:

 1 October 2010 (UK)

I consider that all the films above are 'British' in one way or another apart from '127 hours'. This is because of the american actors in the film and the american location. Whereas the others tend to have British locations, actors, writers or directors. However I do think a film is defined as 'British' by the number of British links in the film and in production.