How much will he earn?: No 25: A Channel tunnel train driver.

Salary: Between pounds 20,500 and pounds 25,000 a year.

Age: 30 to 50.

Perks: The chance to learn a second language (French), discounts on rail trips for himself and his family, and the chance to drive a train, solo, at 186mph.

Hours: Between six and 11 hours a day, a maximum of 54 per week; no more than six days in a row.

(Photograph omitted)