The British media is both very good and hideously bad.
The 'Red Top' tabloids sometimes contain a grain of truth but it is often then distorted and warped into sensationalist rubbish. The other tabloids like to think of themselves as 'more serious' but inevitably reproduce the same stories as their red top cousins, only with slightly longer words and, often, a more deep lying moralistic tone. If you want proper news then look to the 'big' papers - Guardian, Times, Telegraph and Independent.
Here's a brief guide.
RED TOPS
The Sun - Murdoch owned. Supports whichever political party is in power, or likely to win an election. Full of rubbish and women with their breasts out.
The Mirror - Labour leaning. Full of the same stuff as The Sun but with fewer tits.
The Star - Right wing, populist, and increasingly overtly nationalist. Not sure about the relative tit count.
OTHER TABLOIDS
Daily Mail - Right wing and Tory. Mainly focussed on how foreigners are ruining the country. Also spends exorbitant amounts of time listing things which both cause and cure cancer.
The Express - Competing to be more right-wing than the Mail. Less bothered about cancer but guaranteed to run every edition with a story featuring new intrigue about, the long-dead, Princess Diana.
THE BIG PAPERS
Guardian - Left leaning
Telegraph - Right leaning
Independent - Left leaning
Times - Right leaning
(as Low said, compare a feature from each of the big papers and you'll probably have a better idea of what is an actual story and what is a politically driven, scaremongering rant dressed up as fact).
Oh and there's the Financial Times as well but people can only read that if they own a bowler hat and a black umbrella.