Scores on Doors and Name and Shame, still sound better that the Food Hygiene Rating Scheme (FHRS) and the Food Hygiene Information Scheme (FHIS).
But Brits can be stuffy.
The UK Food Standards Agency has published early findings from an ongoing analysis of implanting a national system and found that local authorities recognized the benefits of a single national scheme and any barriers to adopting the scheme were practical and/or financial in nature.
FHRS/FHIS were viewed by local authorities as a tool to enhance their enforcement role. This would be further strengthened if display of ratings by food businesses became mandatory.
Voluntary is silly. Just post it.