When you join the Friends before Friday 19th December we’ll send you a free ticket valid for entry to the Tyrannosaurs – Meet the Family exhibition featuring augmented reality, multimedia experiences, and hands-on fun to delight visitors of all ages. (For dual and family memberships – two tickets. Tickets are valid for one visit any time up to 31 January)

Click here for the details and you can sign up online. And of course if you join the Friends now, your subscription takes you all the way through to the end of March 2016