Emma Royds, until one knows what %dCDT the GCAA is using as its limit even a few drinks with dinner could put you above a threshold. What if the threshold that they'll use is 1.7% or 2%.
I still do not see the benefit of such a policy. I think it's very intrusive, particularly any test done after a long period of leave. Whilst on leave I have a drink with lunch and with dinner.
Do the powers that be have nothing better to do?