On Monday 14th June, the government updated the Step 4 date, pushing it back 4 weeks from 21st June to 19th July because of the prevalence of the "Delta" COVID variant within the UK.
It means that the UK remains at Step 3, which allows: opening of indoor entertainment venues, including cinemas but also larger indoor venues which will be able to run at up-to half of their normal capacity, or a maximum of 1,000 people. Outdoor venues will be allowed to host up to 4,000 people or 10,000 in the largest seated outdoor venues.
Step 4, which will be no earlier than 19th July is potentially the time where all social-distancing measures are removed.
As you can imagine, all of the above are subject to reviews of the data and will depend on how England is doing.
More information is available from https://www.gov.uk/
In the interim, expect the usual explosion of Online Stream shows, allowing the show to go on.