By Carol Linfield
This special has either sold out due to huge demand or may no longer be available at the originally advertised price, terms and conditions.
Wed, Sat 11am-5pm 2 April-2 July
Click on "Buy Now" at the top of this page to purchase your voucher(s) -- one for every two people/family attending -- then print and hand them in at the entrance on arrival in exchange for entry.
12-3pm Tue-Sat; 5:30-9:30pm Tue-Fri until 30 Nov, 2015; 1 Jan-28 Feb, 2016
Orders taken until 31 Dec
12-2:30pm Mon-Sat; 12-3pm Sun until 30 Nov, 2015; 2 Jan-29 Feb, 2016; +£12 5-11pm Mon-Thu; 5:30-10:30pm Sun
1 Sep-30 Nov, 2015; 2 Jan-29 Feb, 2016. Tours run 11am, 12, 2, 3, 4pm
Vouchers must be redeemed by 31 Oct