FaultLines, I could also have written your post - moved to the UK more than 10 years ago and in ALL that time haven't made a single deep friendship connection with anyone!
I have made a lot of effort, I work part time so have met so many potential friends both at work and at the school gates. I have arranged lots of outings, asked loads of people over for a coffee. It's all perfectly nice....but remains at an acquaintance level, never develops into anything deeper.
The loneliness is excruciating, to the point where I recently emailed my family this article: www.guardian.co.uk/lifeandstyle/2010/may/28/emily-white-loneliness to describe how I was feeling (though obviously not the living alone socially isolated part).
I feel so lonely. It has become part of me.
I am ashamed of feeling so needy so I remain the confident smiling mum in the school drive and colleague in the office, I would never discuss this with anyone outside of my family and old friends, spread far and wide across the globe.
For a while I drove myself mad wondering if there was something wrong with me then I reminded myself that I used to make close friendships so much more easily and; for all my faults, they seemed to connect with me no problem.
I also reassured myself that it wasn't just a case of old friends all from home country vs British friends in new country...my old friends come in all shapes and sizes from different parts of the world.
I still obviously visit, phone and skype my friends far away as much as we can..........but the lack of anyone to talk to face to face is a deep hole in my daily life, it really is.
I don't beat myself up about it anymore, I just accept it now and have no expectation of making any close friends. I'm just really really sad that my life has turned out this way because my female friends are so important to me, my long distance circle and DH are all brilliant.........but; what I wouldn't give for a handful of close friends who phone up or pop around for no reason other than because they love talking to me!