Lidl are giving away 2-4-1 Sea Life Centre vouchers when you spend £10.
There are two vouchers given, small print says: -
Voucher valid for one free admission when one of equal or greater value is purchased at SEA LIFE centres/sanctuaries or The London Aquarium. Valid until 31/12/09.
No Limitations, thought it was a great offer.
Note that you can get tesco day out vouchers for sea life centres