Expired. (Deadline was changed from 7th Feb to 31st January).
Also you can stack stamp rewards you already have (the free side after 3, free snack after 7 or the £5 off anything after 11 stamps) on top of the vouchers on the offers page making the deal sweeter. :)
For the students, Sign up to studentbeans, link the kfc colonels club app with this and get 15% every purchase you make with the app. Youre welcome ;)