I suspect this is a cultural misunderstanding. When people from the USA go to England and don't read their guide books about some of the language differences, they order beer in a pub. They receive real ale, which is correctly served at cellar temperature and no colder. If you want a 'beer' like they are served in the USA, you ask for lager. All decent pubs sell lager cold and many pubs chill their glasses.
What disturbs me is that a few bars in San Pedro (no names mentioned) keep their red wine in the fridge, which is quite honestly disgusting.
Sadly, both pubs and real ale are rapidly disappearing in the UK. In ten years time, a pub will probably be only be found in a British theme park.