Go to the link, register or login, check your email, copy the voucher number, follow the link, add goods, proceed to checkout, enter voucher code, press "Go", pay (if necessary).
http://www.cdwow.com/capitalone
It says £1 but it will be £5. No minimum spend either, and postage is free on most stuff!
Enjoy
http://www.cdwow.com/capitalone
It says £1 but it will be £5. No minimum spend either, and postage is free on most stuff!
Enjoy