Why I wrote these things is because I had the chance to compare them with other nations. I lived in Belgium for example and also met hundreds of other nationalities :
Just imagine you meet with a British person (and she/he is around your age, not an old or granny; i know they never stop talking!
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Yeah they are kind and try to keep always smiling to you but; The number of question marks in their sentences are quite low or almost zero, while in other european countries, even you meet casually, you can expect much higher and they are much warmer to a newcomer. In the UK, people are very careful in talking to a new person.
I had made at least 7-8 sometimes-meet-and-drink friends and dozens of hi-to-hi-and-smile friends in Belgium in a few months, around my street or just standing alone in the irish pub in brussels (not the touristic one but the one near to the schuman/maalbek; go there if u r in brussels). And I did half of them with my poor French! In the UK, in pubs I made no friend, as they are usually sooo drunk or prefer to speak in a very strange accent or try to ask a cigarette (if a man) or a drink/cigarette (if a girl) from you!
I have also noticed well that most of the mediterranian people, turkish, arabic, italian, grec, and other asian people hardly have british friends! Yea here some write yes they have, yes they might have but just sit in a busy street in an english city and watch couples, people, especially the foreigner ones, you hardly see them with a british... I had only italian, turkish, arabic and malaysian mates hear, who were also complaining about it...
I am not trying to demotivate people here, but I want them to be aware that they wont find warm people here, who are always reserved and quite careful to be open to you... Look, they always try to look warm and kind by keeping their smile or always trying to be helpful BUT if you keep conversation and try to be friends and keep contact they are always very careful and their smile turns artificial!
British people and nordic people are famous of being cold people, that is a fact. you will never find your people and environment here, and just be ready to feel socially alone sometimes; dont feed high socialisation expectations from the UK... (And If you are a single man just DONT and DONT DREAM of falling in love with/by a british person and marrying one day! that is hardly possible and it is possible that you will not want them, after you know them well)