To broaden this discussion as you keep referring to the Euro sign, are you aware ISO 7010 is soon to become PR EN 7010.
Its entitled - Graphical symbols -- Safety colours and safety signs -- Safety signs used in workplaces and public areas
Its going from being an international standard, which is essentially a recommendation on best practice, to a European Norm requiring that the contents of the standard is written into a EU countries Law.
It will spell the death of a myriad of poor sign designs instead replacing them with a requirement for the same sign in every country for the same requirement.
It will mean a fire exit sign in England will be the same as a it would be in France, Spain, anywhere at all in the EU.
Euro fire exit sign (a man running towards a white brick wall) wave goodbye to him because it will be contrary to European standards to display it.
The BS standard is the same as the ISO standard so choose carefully.