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The Apple TV show series Slow Horses, starring Gary Oldman, is just the latest production to use Watford as a filming location.

Scenes for season four of the spy drama have been filmed at West Herts College, Watford Leisure Centre and Hempstead Road.

Deputy mayor, Aga Dychton tells Andy Collins there are plenty of reasons why major film crews are heading to the Hertfordshire town.

(Photo: Suttiporn Sommam/Getty)