One of the main arguments put forward in favour of
metric conversion is that it is necessary for international trade. But no
conflict exists between Britain retaining traditional units for domestic use
while maintaining compatibility abroad. British exporters remain free to adopt
metric units where international trade requires it, just as metric countries
adopt inch-based specifications and labelling for the manufacture of computer
equipment, car accessories and foodstuffs.
The main obstacle to international trade comes
from EC metric directive 1999/103 which suggests that, from January 1st, 2010,
quantity and dimensions may not be "expressed" in non-metric units, even if
only for informational purposes.
BWMA's position is that EC directive 1999/103 is
deeply misconceived, since it seeks to prohibit information that is
exchanged between private parties and is extraneous to the legal
requirement to show metric.