The soon to be closed (15 October 2013), Coke Zone in the UK allows you to collect codes from larger bottles and multipacks to earn rewards from Coke.
A pretty poor selection of items really, with these being the highest reward options:
The UK scheme never got the travel goodies enjoyed by the US scheme at various time – airline miles and hotel points and it is interesting to note that the US scheme appears to continue even as the UK has announced its closure later in the year.
There are lots of other coke branded items.
Overall – A shame it’s closing, so be sure to cash in your points before it goes!