Tesco are offering a free entry voucher, with a full paying adult, to UK Top attractions including Alton Towers, Thorpe Park, Chessington World of Adventures and Legoland Windsor when spending £10 or more in store until May 22, 2011 (subject to availability).

The free entry vouchers are valid for a range of UK attractions including Alton Towers, Chessington World of Adventures, Thorpe Park, Sealife Centres and Sanctuaries, Legoland Windsor, Madame Tussauds, The Blackpool Tower, London Eye and The Dungeons.

The vouchers are valid until:

• Alton Towers - Nov 4, 2011 (excludes June 16 and Jul 6, 2011)
• Chessington World of Adventures - Oct 31, 2011 (excludes all Zoo days)
• Thorpe Park - Nov 6, 2011 (excludes Oct 29 - 31, 2011)
• Sealife Centres and Sanctuaries - Dec 31, 2011 (excluding August and Dec 25, 2011 at Sealife Aquarium London)
• Legoland Windsor - Oct 31, 2011
• Legoland Discovery Centre Manchester - Dec 31, 2011
• Madame Tussauds - Dec 31, 2011
• The Dungeons - Dec 31, 2011 (excludes Oct 29 - 31, 2011 at London Dungeons)
• Warwick Castle - Dec 31, 2011
• Blackpool Tower - Dec 31, 2011 (excludes Oct 22 - 31 and Dec 25, 2011)

For full details visit Merlin website.