Possible production companies for our film.

As it's a short film some larger companies, such as the BBC and its short films pages, would give the film a dedicated page if submitted to them via http://www.bbc.co.uk/filmnetwork/submit/  however! for production companies we would probably have to use small independent companies such as warped films or gain funding from our college or from people funding the film cause they want to see the product.
http://www.ukfilmcouncil.org.uk/funding  -  The UK film council give a lottery style of funding to film makers with successful applications and this funding can be used for the production, advertisement or alternatively, can be used with an innovation fund which is for cinemas which give new films a chance by using digital show technology rather than the film reels which are expensive.

http://www.coffeefilms.com/filmog.html  - Coffee Films, are a British independent film company who make short films and produce them, they may be willing to produce the film after filming