I have been given a £30 iTunes voucher via email and can't get the money of it!!! HELP!

Hey there machewcronin,

It sounds like you are unable to redeem an iTunes Gift Card. I would use the following troubleshooting to help resolve that named:

Redeeming iTunes Gift Cards and content codes

http://support.apple.com/kb/ht1574

If this does not help, or is not relevant, can you elaborate on what is preventing you from redeeming the gift card, or any error messages/prompts you are getting when you try?

Thank you for using Apple Support Communities.

Take care,

Sterling