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blues and twos

(mainly, UK, Ireland, informal) [of an emergency vehicle] with the blues and twos switched on.

ˈbluz ənd ˈtuzDocumented since 1960s1960sBoomerhistorical48 viewsLast reviewed Jun 29, 2026+ Add a definition
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Born ~1960 · no dated citations yet
1960BornToday, 2026
Boomer / counterculture eraSee decade cohort →

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UK
#1·Apr 27, 2026UK

(mainly, UK, Ireland, informal) [of an emergency vehicle] with the blues and twos switched on.

He glanced at his watch. “Blues and twos,” he said. “I want to get there before the train.” [...] They pulled out of the forecourt at the rear of the police office and drove straight across into Vauxhall Bridge Road, ignoring the one-way…
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UK
#2·Apr 27, 2026UK

(mainly, UK, Ireland, informal) The flashing lights and loud siren of an emergency vehicle.

Five minutes later, Bella, efficient as ever, radioed him back with an address near Hove station, about ten minutes drive away, going soberly, or ninety seconds with the blues and twos on.
Origin: Originally 1960s police slang, from the blue colour of the lights and the two-tone sound of the siren. Popularised by Blues and Twos, a documentary series broadcast on ITV from 1993. Origin information sourced from Wiktionary contributors (CC BY-SA 4.0).
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