20p??? That would be the NEAF Bomber Wing, then! 😎
I left UK for Tengah about a fortnight after the breathalyser came in (1967). Fortunately I was within walking distance if all my local pubs, as I was back at my parents’ place on embarkation leave. And for the next 2.5 years in Singapore, nobody seemed to care very much. I only declared myself unfit to drive once, after a PU on HMS Hermes docked at the naval base, and after bouncing off kerbs on both sides of the road through the base invited Jules Leigh to take control of my Sprite and get us home. <insert further Singapore drink/drive stupidities>
But we were young and indestructible in those days. And the WW2 guys never knew if they’d see the end of the week.