Make this your starting point. How do British film production companies and distributors survive and prosper given their more powerful neighbour, Hollywood? What is the current state of the UK film industry? To be specific focus your case study on a UK institution from which you can later make comparisons with US production companies.
Links to get you started on researching UK film/distribution companies.
As you research make a list of subject specific key terms, i.e. "an integrated film company. production slate, etc."
http://www.bbc.co.uk/films/ukmovies/interviews/britplayers/vertigo_films.shtml ( essential videos with interviews/information )
http://www.uk.castingcallpro.com/cview.php?uid=354 (some history)
Working Title Films
UK Production Companies and Studios
http://www.bbc.co.uk/films/ukmovies/relatedlinks/production_companies.shtml ( An extensive list with links to many lesser known UK film companies.)
UK Cinemas and Distributors
Several video interviews with key players on various aspects of the British film industry
Click on the image to enlarge. This should be used with the concept map graphic for "higher/big concept" key terms.