This is a list of free vpn providers, free vpns are good for public wifi so people cant snoop on what your doing or basic uses. In no way is it a good idea to rely on free vpns for protection from law enforcement or copyright agencies. There good for general usage of unblocking websites and low level privacy threats.
http://www.securitykiss.com/ (has 300mb a day free hosted in europe)
http://ultrasurf.us/ (has unlimited traffic hosted in the US)*
http://www.tunnelbear.com/ (has monthly limits but is free and good)
http://proxpn.com/ (free vpn which will also work for mac users)
http://hotspotshield.com/ - (not the best, but better than being naked)
http://www.packetix.net/en/
http://www.acevpn.com/free-ace-vpn-service-invite/
https://www.your-freedom.net/
http://www.vpnbook.com/
http://expatshield.com/ has UK servers
https://vpnium.com/
https://www.versavpn.com/
http://cyberghostvpn.com/ (A good one but , free accounts are given 2GB a month but A free one month premium is included if you subscribe to their email newsletter
http://www.justfreevpn.com/
http://www.freecanadavpn.com/ canada servers
http://www.spotflux.com/ has UK servers
http://www.hideman.net/ gives 5 hours free per week
http://us.newfreevpn.com/ gives US and Uk ips
http://www.touchvpn.com/mobile.html
http://www.vpnforuk.com/
http://www.nlfreevpn.com/
http://freevpn.nl/
http://www.kiwivpn.com/