"Another asked what training in customer service was given to immigration staff, suspecting that they aspired to emulate their famously truculent counterparts in the US."
I can't vouch for immigration staff training. But was at LHR1 yesterday going through security when a very energetic and smiling hi-viz wearer was upsetting a lot of people by making all sorts of 'stupid' demands.
As tensions rose one lady ahead of me testily retorted "You could at least say please!"
To which he replied. "No, I can't, we've been trained not to say 'Please'. We just have to give orders and you have to follow them."
"So what about customer service training?"
"I dunno, not my problem. I'm just doing what I've been told to do by my bosses."
At least he had a smile and was enthused with his job. Or maybe he was just high on something.
