To be honest I think you'd struggle to find a more well-mannered and up-front country than the UK. In restaurants the bill is always correct, shops rarely purposely try to short-change you and if you have a complaint the customer is always right. In my travels, I have found in most other countries the opposite is true. People are not well-mannered, they shout, they can't queue, they try to over-charge you, they try to short-change you, and if you have a complaint, often the people in the shop get aggressive with you and gang up on you. Abroad, the customer is generally wrong and you, the insignificant customer must accept that. I recall an event in Turkey where I was over-charged in a restaurant, I argued my case and I had the whole restaurant staff gang-up on me basically saying "pay up if you value your well-being". I stood firm and got them to amend the bill in the end, but they tried their hardest to intimidate me into paying up. This would have never have happened in the UK yet is rather common place in Turkey and in other countries. I've also had similar run-ins in restaurants and shops in countries such as Morocco, Tunisia and even Spain where the staff have got nasty over a complaint of over-charging. They absolutely HATE to be caught out and turn on you if you do catch them. On the whole I think you'd struggle to find a country with more mild-mannered, genuine, trust-worthy people than the UK.