I'll have to check with the Admiralty manual, but my understanding is that the British version is the one used for calibration and navigation in general, which is correct at 48 degrees of latitude. According to the Dictionary of Military and Associated terms from the US DOD, "The United States has adopted the international nautical mile equal to 1,852 meters or 6,076.11549 feet." That would be at 45 degrees.
That's a loooooong nautical mile, even for EASA!
But who cares - the calculators use 6076 - I'd forgotten the number, but you kindly supplied it!