Anyone know any free/trial VPN UK?

Hi so anyone know any free vpn for british streaming websites? I mean like for example how people use hotspot shield for american ones such as Hulu, is there anything for the uk? I'd like to watch a couple of episodes on channel4 but not willing to pay a monthly fee for such a short stay. 24 hour free trial would be fine too!

Thanks

What is a VPN?

VPN is (Virtual Private Network) were first used by companies to enable their employees to securely access internal systems such as email remotely (e.g. from home or while on business trips). Today they are increasingly being used for personal use by individuals to protect their privacy while online in public places (e.g. when using the wi-fi connection in a cafe) or in a country where the internet is censored / blocked (e.g. China, Saudi Arabia��).