Producers of Harry Potter and the Cursed Child have confirmed more tickets to the show will be released.
It’s as a response to problems the production has been having with ticket touts.
Sixty people have been turned away from the show for presenting invalid tickets.
The Palace Theatre are refusing to admit anyone who presents a ticket that has been resold.
Producers Sonia Friedman and Colin Callender said: “The secondary-ticket market is an industry-wide plague, and one which we as producers take very seriously. Our priority is to protect all our customers and are doing all we can to combat this issue.
“We have already been able to identify, and refuse entry to a significant number of people who purchased tickets through resale sites and will continue to track down touts and refuse entry to anyone who has knowingly bought a ticket from a tout through the secondary market.”
The new booking period will be announced later this year for performances beginning in December 2017.