What is a british Film?

A British film is a film that has been mainly based, filmed, directed and produced in Britain. Usually the main cast will consist of British actors, however, in some cases there have been actors included from other countries. As long as at least 70% of the films costs has been spent on British companies, the film will be classed as a British film. The Queen also has the authority to make a film British, even if partly created in another country as long as the two governments agree. British films also get tax incentives.

Why is the British film industry important to Britain?

The BFI is an important part of the British economy, as the vast majority of the costs of the films are invested into British companies.
The BFI also allows Britain to show the rest of the world it's cultures and historical background, whilst a;so allowing Britain to show the quality of films we can produce as a country.
The BFI allows people that may not enjoy films produced by other countries, such as the US, to enjoy something produced by their own country.

http://en.wikipedia.org/wiki/BFI_Top_Britsh_films

Examples of modern British films:

Notting Hill
The King's Speech
Love Actually
Harry Potter
Lord of the Rings

The British film Institute (BFI)

The BFI is an organisation that aims to promote the development of film and television throughout the UK, whilst also educating on film and television and their impact on society. The BFI also establishes the cinemas of the UK and the access of films to the public. The BFI runs the IMAX cinema in London also the BFI Southbank in London, which shows popular films and short films, also catering for new technologies such as 3D. As well as showing popular films and new releases from around the world, the BFI also show a range of specialised and historical films that would not usually be available at other cinemas. The BFI is also very popular at educating on the film industry and also hold a lot of film festivals showcasing films that would not otherwise be seen in a typical cinema. Festivals promote different types of film to cater for all audiences.

http://en.wikipedia.org/wiki/British_Film_Institite

http://www.bfi.org.uk/