It was following his fateful opening of Morrison's at Regent Circus, Swindon in 1994 that Prince Harry's fortunes took a tumble.

Following the premature death of the Queen Mother, he had embarked on a nationwide tour of the supermarket chain, opening stores across the country and promoting its ‘great deals’ and the Old Ways – where working people knew their place.

Drunken louts interrupted proceedings, bringing the event to an ignominious conclusion. Things then began to further spiral out of control. His maidservant lover, Matilda, left him, and soon he was reduced to the opening of Dorothy Perkins, in Croydon.

Maybe a lost work of Shakespeare, maybe not – but this is the kind of fare that audiences can expect from the wonder that is Showstoppers, the improvised musical.

Working entirely on cues, musical styles and scenarios provided by the audience, the performers then construct a medley of songs and a working plot, in real time. Each show is completely unique (our particular premise being “The Queen Mother is Dead!), and often fabulously funny – choice lines including “Did you hear about Ethelred? He never saw it coming!”

Full credit must go to the entire cast: Ruth Bratt, Justin Brett, Pippa Evans, Adam Meggido, Andrew Pugsley and Lauren Shearing each gave the performance their considerable respective all. Kudos as well to the musicians, who were able to switch effortlessly from Reggae to Gilbert and Sullivan among a larger eclectic collection of musical styles without missing a beat.

With a talented cast at the top of their improv game, this is an easy recommendation for young and old alike, a show unlike anything else you’ll see this year.

Showstopper is at The Theatre Royal Bath until Wednesday.

-Sean Cameron