The UK went up its own arse a few years ago, and became a nation ruled by the fear of paying the mortgage. Losing your job means losing your home, so people keep their mouth shut and follow the Draconian rules trotted out by HR departments in order to feel comfortable.
Having an opinion that differs from what is considered PC will end up in a meeting with some moron who thinks social engineering bullshit, is better than a free and democratic society.
The number one rule that I resent is the prohibition of alcohol, and the resultant sneering at the culture of nipping out for a pint...a single pint...over lunch. Alcohol is social grease, it helps people unwind, it makes work less stressful and it can overcome numerous problems that happen when people, for some reason, think a joke was serious and get butthurt over it. Sitting together as a group of workmates and having a pie and a pint is just the best way of forging bonds etc.
Yes I appreciate that doctors and people working heavy machinery etc should not partake of the alcohol, but if you're a back office worker whose job is mind-numbingly dull yet frightfully easy (have done a few myself), then where is the harm in having a single pint at lunchtime? Creative industries would thrive if people could sip a solo glass of wine over a nice lunch, and just talk. Plus it helps if the boss isn't seen as somebody with a rod up their backside, because you're then much happier to take them problems and suggested solutions, and they know enough about you to make an informed judgement when offering assistance.
As always these rules do not apply at the upper echelons of society, where you can get shit-faced on expensive wines over lunch, because you're working at the golf course that afternoon 'networking' or something equally insulting to the concept of the 6 figure pay packet you collect.