TiredAndEmotional:
I’m not convinced all his drinking was done the night before.
Why not? If what he has stated is true ( and why wouldn’t it be) then his alcohol level is consistent with that.
Not an exact science but a 75cl bottle of normal strength vodka is 28 units of alcohol.
He finished drinking about 3 a.m. and started driving to work 7-8 hours later.
The liver gets rid of alcohol at approximately 1 unit per hour AFTER you have stopped drinking. That would bring the units of alcohol in his body down to about 20 ( or slightly less by the time the police tested him.
The drink drive limit is approximately 4 units and 4.5 times the limit is 18 units.
Like I said, it is not an exact science because everybody reacts differently, but his story is entirely consistent.
Unless you think he had been had drunk about 5 cans of super strength (8%) lager just before driving…