How can I hide or show a different IP to a website?

Stealthy

This browser plugin comes for Firefox and Chrome/Chromium to enable us to fake an IP from a different country which is then presented to a website we browse to via a proxy provided from stealty.

In the free version there is a somewhat limited capability for choosing our location either as random or for a given country by surfing via a proxy when available there. There also is a commercial PRO version to have an guaranteed IP from the UK or from the USA.

• Stealthy for Chrome/Chromium
• Stealthy for Firefox

Of course there are some security issues we will have to think about when trusting our data to a not so well defined proxy somewhere in the world wide web.

The plugin can easily be switched on or off on demand.

Not specific to Ubuntu (It works on Linux / Windows / Mac OSX / iOS but you can use a VPN service that lets you connect to a VPN server in the UK.

Here's one I have used before they let you choose a VPN server in a variety of countrys including the UK.

VPNUK