This performance is no longer going ahead. Please see the below statement from the promoters of this event:

We are working to reschedule this event as quickly as possible so we can offer you the opportunity to exchange your tickets to a new date. However, if this isn’t going to be possible we will contact you again to offer you a full refund. We will let you know any updates as soon as we can. We will contact you directly – you do not need to contact us or visit us in person.