The last night at home

So, as my title indicates, I leave for London tomorrow evening around 7:45. I'm mostly packed; my mother was shocked I fit most of my clothes in one suitcase. She didn't believe me when I said I could fit five pairs of jeans plus everything else--guess I showed her. All I'm worried about is forgetting something important. Like my passport or something. I just want to get into the UK. And then after that, all I have to worry about is finding a flat--no sweat, right?