To give more groups of people a chance to attend, there are limits to the number of tickets you can purchase for each session. For some sessions you may be able to purchase as many as 10 tickets but for a number of sessions the limit is four tickets because of high demand and the smaller capacity of the venue. You’ll find details of these on the ticket selection page.
If you have already purchased tickets for a session, these will count towards your overall ticket limit. For example, if you have purchased three tickets for a session where the overall limit is four, you will only be permitted to purchase one additional ticket.