What's the weather like in London in February? What clothes are suitable for wearing? Are food, clothes and other things expensive there?

This friend is as old as me. I live in London. For lunch and dinner, what kind of food convenience store can I eat here, that is, it is economical and affordable, that is, go in and eat all kinds of food, such as sandwiches, noodles, water, drinks and fruits, pick up what you want and pay at the cashier. Generally, it is no problem for one person to weigh 8,19 pounds. For dinner, if you are not with friends, As for the weather in London from December to February, it is cold and rainy, but sometimes it will be warm and not very cold on sunny days, and the light time is very short, only 7 or 8 hours. Clothes are cold and cold, but not as cold as Heilongjiang, so a thicker coat will do, autumn clothes will do, pants will do anything, and a warm autumn trousers will do, so will the clothes people here wear, and the prices of food and clothes. Generally, it's not very expensive. The clothing store I've been to is only 2 pounds cheaper, but you can buy clothes here at any price. If you want to buy them, go to Oxford Street and a souvenir shop. It's also a souvenir to remind you that if there is no tourist bus in London, you'd better take the subway. I suggest you look at the subway map here before you come. Generally speaking, the things here can be based on the economic conditions of the British. It's not necessarily true to know these things. I hope it can help you. Oh, there is a small detail. I don't know what Italian sockets are like, but British sockets are different from China. It's better to pay attention to this. The voltage here is 24 volts. Pay attention to the time difference, and an umbrella is a must.