Just to clarify BM,
The breathtest showed 0.1 Mg/L, (or 0.2 "Promille" in the blood). I donīt know the unit you use in the UK, but in Sweden the (rather strict) limit for driving is just that, 0.2 promille alcohol. I do know the limit measured in Promille is 0.8 in UK(= 0.4 Mg/L). So it was not a very high level of acohol, but still, one wonders how some people think, or if they think at all.