The company’s team attended the opening of the Grade II-listed heritage restoration project, which saw the east wing’s theatre brought back to life to provide a venue for shows, opera, plays and ballet.

There is also a new public space at the east wing entrance.

During the restoration work, Willmott Dixon stabilised 80 years of decay as it kept the appearance of the theatre similar to when it was initially closed.

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As well as stabilising the structure and the ceiling, Willmott Dixon lifted up the entire floor and relaid all 1,200 original floorboards.

The completed theatre space can now accommodate 1,300 people standing and sitting, with the stage area ready for another 100 years of entertainment.

“A bright, new era dawns as hundreds of thousands of people can enjoy the restored theatre that’s been hidden from public view for around 80 years,” said Chris Tredget, managing director at Willmott Dixon.

“I’m delighted we can bring back to London a little piece of forgotten history, and hosting one of the first events there for so long was a privilege.”