Ha, Well they applied in LA so that is why - they got used to the American way. As an American this cracked me up. I could tell they were not American based on the "accent" in their writing
based on your photo i thought you were a chimp. you are much smarter than me. it must be cockney? it’s not ‘proper’ british english. i am sure i would understand it spoken. it’s a strange thing to type IMO
i’m a skier and we use cm for the length of the ski mm for the width and measure snow in meters. who cares? people can use two systems and calculate in their heads easily.