I'm a UK citizen. Not as such. The 'best' university will vary according to your needs and interests. However, there are several external quality assurance mechanisms which you can use as a guide. Subject and institutional reviews are carried out by the Quality Assurance Agency, and the Research assessment Exercise is carried out by the Funding Councils.
Student visas are very easy to get.
While the British Council can help you with information on studying in the UK, we are not involved in consular matters. I've still got some questions. The British Council is the United Kingdom's international organisation for educational, cultural and scientific relations. Registered in England as a charity.