What is a proxy server and what are some UK proxy servers?

I want to watch shows on the BBC and ITV on the internet. Unfortunately I am in America and I can’t get access to British things. How do I use a proxy server??- I’ve never used one ever- and please list some Free reputable websites.
Thanks.

Proxy server is a bridge between our computer and internet. It used for anonymous , change IP (country , etc) , privacy and security.

I suggest you to try with the British ( UK) proxy if the site is restricted from outside UK.

Get the best one at : http://proxy4web.info

HOW TO USE BBC IPLAYER ABROARD (SIMPLE AND WORKS FULLY) Via proxy