Despite what the Daily Mail would have you think, "The Units of Measurement Regulations 1995 require that all measuring devices used in trade or retail be capable of displaying measurements for most products in both metric and imperial quantities" (WP, emph. added).

Moreover, "many imperial units [are] still legally mandated for some application; draught beer must be sold in pints,[31] road-sign distances must be in yards and miles,[32] length and width (but not weight) restrictions must be in feet and inches on road signs (although an equivalent in metres may be shown as well),[32] and road speed limits must be in miles per hour,[32"