Five months after Britain’s shock referendum to leave the EU, “Brexit: The Musical” opened this week with a star role for Boris Johnson, the gaffe-prone Brexiteer turned foreign secretary.

Shirreff has previously delved into satire with a trilogy of musical comedies, including one, “EuroCash”, that looks at the world of finance. He wrote the Brexit musical in one month in July.

The play, which is showing above a pub at the Canal Cafe Theatre in the Little Venice district, involves a huge array of characters, including Donald Tusk, Jean-Claude Juncker and Angela Merkel — all played by the cast of five.

The problem with writing about current affairs are that the situation keeps evolving, and Shirreff had to write in a judge after the High Court ruled that parliament must have a vote before Brexit starts.

Farage’s meeting with US President-elect Donald Trump at the weekend will also probably make it into later performances.

“Brexit: The Musical”, directed by Lucy Appleby and composed by Frederick Appleby, is sold out until November 25 but will return in January and February.