Four men have admitted affray during which a noxious substance was sprayed at Heathrow Airport, leaving 21 people needing medical treatment.
Tyrone Richards, 31, Anton Clarke-Butcher, 25, Omoneke Whyte, 30, and Denzel Eduardo, 28, all pleaded guilty to affray on Tuesday at Isleworth Crown Court after the incident on December 7 last year.