(UK, slang) To fake one's own suicide.

What did Reginald Perrin do?

The story concerns a middle-aged middle manager, Reginald "Reggie" Perrin, who reveals himself in the first series to be aged 46, who is driven to bizarre behaviour by the pointlessness of his job at Sunshine Desserts. ... The first novel in the series, The Death of Reginald Perrin, was published in 1975.

How old was Reginald Perrin?

He was 80. The cause was complications of a recent stroke, his literary agent, Ann Evans, said. Scripted by Mr. Nobbs and based on his 1975 novel, “The Death of Reginald Perrin,” the television series centered on an addled, gray-flanneled English Everyman, played by Leonard Rossiter.