Sitting in a working class pub, drinking a Guiness and talking to the people all around me about how a traveler can feel more at home...I wanted to hear from locals how they perceive travelers, and how we, as part of a worldwide community, can experience the real day to day life of London. Beleive me, it was extraordinary!!
Quick Tips:
In London in the spring and fall, it is best to dress in dark, stylish clothing, and walk with confidence. Realize that large European cities are very fashion-conscious, but not to the point of being stuffy. Unless of course you intend on experiencing formal dinner parties and the like....
In the warmer summer months, comfort is the key, dress in what will make you the most relaxed.
I last visited in March of 2001, and wore black pants, black pullover, and a light jacket. In case of a chilly day, I packed a sweatshirt in my backpack, and used it to cushion my camera gear. I was told by a friend living in London, if she didn't know better, she would have thought I was a Londoner....A very nice comment indeed.
Best Way To Get Around:
I have used public transport considerably when I visit Great Britian. From the quick inexpensive "black taxis", (beware of the unlicensed taxis, it could cost you a lot), to the Underground, one of the best people movers in the world.
One tip on the Underground, if you are traveling a distance, try and find a seat, its a lot more comfortable, and gives up more room for the people that are only going a few stops down the line.
If you are only going a few stops, consider the far end of the platform, most commuters stop near the middle, hence it becomes shoulder to shoulder, and a playground for the pickpockets that also ride the rails. I have traveled in the far cars, and have had open seats, and plenty of standing room, while the middle of the train is filled to its limit. So look beyond the immediate area, and find a little more comfort...