Free internet access at the travelodge on Vernon Square London

Sometimes I get cross about having to pay money for old rope.
At the travel lodge hotel I stayed at in London this week I had a choice of buying 24 hours wifi access for £10 or £20 for a week. As I was staying for two nights I took the week but my voucher is still valid until Thursday evening. So here's the voucher code TLZQREPVIF. My small contribution to the downfall of global capitalism - probably I'll discover this is illegal.
Perhaps there is a website out there which lists free vouchers like this - when I have a moment I'll try and find out.