To be considered a British film, a film must pass the cultural test by receiving at least 16 out of 31 points across four categories: cultural content (up to 16 points), cultural contribution (up to 4 points), cultural hubs (up to 3 points), and cultural practitioners (up to 8 points). Additionally, a British film should be set in England, have English actors, and a British director, and involve one of the UK's official co-production agreements or the European Convention on Cinematographic Co-production.

1. British film
To be a british film it has to include the follwing 3 things:
 The cultural test for film
 One of the UK’s official bilateral co-production agreements
 The European Convention on Cinematographic Co-production
Also the elements in the film has to be british as it should be set in England, it
should have englisch actors in it and the director should be british as well.
Another aspect to be named as a british film is that it has to get 16 out of 31
points in a test which it has to go through. There are 4 different groups in
which they can get different points. The groups are:
 Cultural content (up to 16 points)
 Cultural contribution (up to 4 points)
 Cultural hubs (up to 3 points)
 Cultural practitioners (up to 8 points)
Referenceshttp://www.bfi.org.uk/film-industry/british-certification-tax-relief/culturaltest-film