UK retailer Clintons is offering two 2 for 1 theme park vouchers with any purchase at select stores during July and August 2011. The vouchers are valid at Alton Towers, Chessington World of Adventures, Thorpe Park, and Legoland Windsor along with a number of other UK attractions operated by Merlin Entertainments Group.

The vouchers can be used when buying a full price adult ticket on the day (at the higher gate prices rather than discounted online tickets).

The vouchers are valid through most of the 2011 season, but there are some block-out dates on which they can't be used:

• Alton Towers - Valid until November 4, 2011
• Thorpe Park - Valid until November 6, 2011. Block-out dates: October 22 - 31, 2011
• Chessington World of Adventures - Valid until October 31, 2011. Block-out dates: all Zoo Days
• Legoland Windsor - Valid until November 6, 2011. Block-out dates: The whole of August (note that the park is closed on some days during the season).

The 2 for 1 vouchers can also be used at Madame Tussauds, Warwick Castle, The Dungeons, Legoland Discovery Centre and Sea-Life Centres and Sea-Life Sanctuaries across the country.

There is also a chance to enter an online competition to win a selection of prizes including a VIP family trip to LEGOLAND WINDSOR, family of four merlin annual passes and a pair of tickets to the UK's top attractions.

Please note: there have been no specific dates given as to when the vouchers will no longer be available in stores so if you visit a store and are not given a voucher please email us to let us know.