All English courses are different so 'the best' isn't a helpful concept here. It depends what sort of Literature course you want. And to discover that you will have to read the course descriptions for the different courses at a wide range of different Unis. And you will have to take into account what grades you are likely to get and what the admissions requirements are for each Uni.
Start with these three - simply because they are very different courses - and work out what sort of course/focus you want.