I have this from a source in the UK, which I thought I would pass along to the list regarding the use of Fahrenheit vs Celsius on packaging, labels, etc. in the UK:
> As far as I know there are no UK laws which explicitly require or prohibit > use of any particular temperature scale. > > What is true is that the EU Directive requires that SI units (i.e. kelvins or > degrees Celsius) should be used for "public health" and "public safety" > purposes. However, the UK has not properly translated this into domestic law.
