I live in England (though I grew up in Canada). I guess Finns are even more reserved than your average English person (though I find it hard to talk about an "average English person" unless you break it down into the different social classes), but I have found that it takes time to really establish a deep friendship with an English person. (I know people of many nationalities here, so only some of my acquaintances/friends/close friends are English.) Years, sometimes. I have friendships here which I feel have taken that long to progress from acquaintanceship, to friendship, to close or closer friendship. Yet, I feel that these types of friendships can be the most lasting and valuable once they are ultimately established.