The last 'social event' that I went to was the day before yesterday. A friend from university rang me out of the blue and asked if I wanted to meet up. A few hours later, lots of other friends had joined us and it had become an impromptu gathering, which was kinda cool.
The last 'gathering' that I went to was a night out to celebrate the end of law school exams. There were about 150 of us all in this bar in the West End of London, although I only ended up talking to a few of them. Still, it was a good time.
The last 'party' that I went to was at the beginning of December: it was a sort of Christmas party at one of my friends' house where we exchanged our Secret Santa gifts and had too much food and mulled wine and made too much noise so the neighbours started complaining. Oh, and cheesy Christmas music; lots of cheesy Christmas music.