Imperial College will work you. They have a world-class course that starts you off teaches you the most relevant technology topics. The professors are extremely high calibre. They know what they are talking about. You will have to work hard just to get by, and to excel you will need to keep up and do a lot of extra work. They are famous for giving out long and difficult group projects. These projects will test your practical ability when it comes to programming. They also help you develop good coding habits and prepare you for the industry.
Once you graduate, you are a highly desire graduate. You are almost guaranteed to land a job.