The Grade I listed Theatre Royal at Haymarket dates from 1720 and is reputed to be haunted by the playwright and comic actor John Baldwin Buckstone (born 14 September 1802 – died 31 October 1879)
The friendly phantom of actor-manager John Buckstone from the 19th century has been seen many times in the Theatre Royal, Haymarket. When shown a picture of John Buskstone, witnesses always confirm that that is he whom they saw. As indeed did Dame Judi Dench and Donald Sinden.
Apparently, John Buckstone is still very much attached to his old Dressing Room 1 as that is where he usually manifests. However, he has been observed in other places in the building as well, including the stairwells and once on the stage. Staff backstage have heard him rehearsing his lines although he has not seen there.
Patrick Stewart saw the apparition while performing Waiting for Godot with Sir Ian McKellen.
Upon coming offstage for the interval, Stewart told his co-star that he saw a man standing in the wings wearing what looked like a beige coat and twill trousers.
Sir Ian asked him: “What happened, what threw you ?”
“I just saw a ghost. On stage, during Act One,” Stewart replied.