In the United Kingdom, what are the flashing amber lights beside a zebra crossing called?

In the United Kingdom, the flashing amber lights beside a zebra crossing are called Belisha beacons.

A Belisha beacon is a globe-shaped amber lamp mounted on a black-and-white striped post. It marks the crossing and flashes to draw attention to pedestrians who may be crossing. The name comes from Leslie Hore-Belisha, who introduced the system while serving as Britain's Minister of Transport in the 1930s.

At a zebra crossing, pedestrians have priority once they are on the crossing, and drivers must approach carefully and stop when required. The beacon itself does not function like a traffic signal with red, amber, and green phases.

Belisha beacons are often confused with the signal systems used at pelican, puffin, and toucan crossings. Those crossings use traffic lights or detector-based controls, whereas the classic zebra crossing is identified by broad stripes and beacon posts.