Used to be that Brits commonly used a dual temperature system, cold weather in Centigrade (brr, -5 outside), hot weather in Fahrenheit (phew, 85 today, what a s

Used to be that Brits commonly used a dual temperature system, cold weather in Centigrade (brr, -5 outside), hot weather in Fahrenheit (phew, 85 today, what a scorcher!).