Taken from MSE:
Alton Towers less than half price Phone to book and quote code
Get adult tickets to Alton Towers for £17 and kids tickets for £12, less than half of the on-the-day prices (£36 for adults, £27 for kids). Just register for free to become a member on the Netmums website, then telephone to book on 0870 999 0071 and quote Netmums to get the discount.
Netmums has given us permission to share this discount code with MSEs readers. These discounted prices are cheaper than using a standard 2for1 voucher, as youd have to pay one adult on-the-day price of £36 for two people. Using the code, two adults can go for £34, or one adult and one child for £29.
They're also cheaper than buying online, saving you £12 on the cost of an online adult ticket (normally £29) and £10 on the cost of an online child ticket (normally £22). The offers valid until Friday 16 October, excluding 6-10 and 13-17 July. It isnt valid with other discounts or online bookings; to find more details, visit the Netmums website.