Alton Towers has partnered with Yoo yoghurts to offer 2-for-1 entry on tickets when purchasing any 6 pack of Yoo yoghurt from selected Tesco stores.
To qualify for this offer you need to purchase a 6 pack of Yoo yoghurt (displaying the 2-for-1 entry logo) and cut out the voucher and take it along to the ticket booth on the day of your visit.
The promotional packs will be available in select Tesco stores between March and August 2012.
For full details, see the information given on the 2-for-1 promotional 6 packs of Yoo Yoghurt.