1. What's the UK weather like?
London has a temperate oceanic climate, with warm winters and cool summers (but not too cool, the summer before last was very hot). But it has been relatively cool in the recent two years. In early June, it is now about the same as April in China, with temperatures not exceeding 20°C every day.
But it rains frequently in London, usually light to moderate rain, so it is recommended to check the weather frequently and bring an umbrella.
2. Is London safe?
Recently a lot of knife incidents. But majority of time it's ok. It's really hard to tell.
Generally, wealthy areas are safer, but cellphone snatching is rampant everywhere (especially in the city center). If you are walking on the sidewalk while looking at your cellphone, the motorcycle gang will just take your phone and cycle away lol.
Also, gypsies (mainly women) give you flowers and ask you to pay, those men (don't know which country) wearing special clothes and take photos with you ask you for paper notes afterwards. I once experienced someone who blocked their hands with their scarf near Oxford Street and tried to open my bag.
3. What are the good universities in London?
In addition to the famous Oxford and Cambridge, there are many top-ranked universities in London, such as the London School of Economics, Imperial College London, UCL, etc.
4. What do I need to bring with me before coming to the UK?
Please see Travel Essentials
5. Is London expensive?
London is relatively expensive. Most hotels in the city center are expensive. In June, July, and August, a high-end hotel with the best location in the city center costs from £300 per night, and a regular hotel costs about £200. If you want to save money, you can stay a little further away and it will be inconvenient, but you can still stay for about £100 per night.