This was a My City Deal / Groupon thing. The code is valid until 11th September 2010 and I'm not going to get around to getting a new prescription in order to use it in time. It will get you £25 off any order on Glassesdirect.co.uk but doesn't work against delivery costs. I'll send you the code as soon as I receive payment.
Paypal gift. Will forward the code to you via email upon payment.