Pay no attention to rankings.
When I started my undergrad, the Times national rankings said my university was the 9th best university in the UK, while the Times international rankings said it was the 5th best university in the world, just behind Oxford and ahead of Cambridge and Imperial, making it the second highest ranked university in the UK.
So in one year the same newspaper said it was simultaneously the 2nd best and 9th best university in the UK. They are completely arbitrary.