which is better?UCL/KCL/Durham/Warwick/St Andrews

UCL and Warwick are top tier for business related courses. As for the others I'm afraid I don't know. So pick Warwick or UCL if you get their offers probably.

I've heard that it's quite hard for students who study in Warwick's to enter the university after the foundation year...is it true or rumor?!

Whoops I actually completely missed foundation year. Regardless, you should pick UCL/Warwick if you can as they are the best so surely you're most likely to get in from there. I'm at UCL (doing computer science so not the same subject) but I know two engineers who did foundation years here and stayed on. I think in general it IS quite difficult to get in after foundation, and you'll really have to display high quality work to get in but don't be discouraged.

The ranking of Durham is quite well is it good?
Or is it easier to get in after foundation.

St Andrew > Warwick >Durham...
This one is according to the rank complete university guide for business and management study.

All of the universities you mentioned are very respectable, so unless you're really looking for jobs in investment banking (where I hear they heavily target a select few unis) you'll be good for jobs regardless. With regards to foundation years, I'm afraid that's all the knowledge I have on them. Best of luck

At the moment, you don't meet the English requirements of Warwick (min. 6.0 in each module), KCL (min. 7.0 to 6.0 in each module depending on course), Durham (min. 6.0 in each module), or St. Andrews (min. 6.5 or 7.0 in each module), so you'd have to improve your score before applying to any of these.

Durham's course is a no-go. Its business department is not in Durham but rather is in a cesspool of misery called Stockton. Avoid like the plague.

Really?! Lots of people recommend Durham in my country....

There are two campuses Durham uses. One, naturally, is in the city of Durham (and you will see on Durham's website that most courses are at the City campus); the other one is in Stockton and is called Queen's Campus. I think a lot of the people you speak with in your country might have studied at the campus in Durham, rather than the campus in Stockton. Anyone who studies a degree subject other than business likely studied in the city.

That being said, you might have come by people who studied business at the Stockton campus and they might have enjoyed it. Be warned that you might not like it, though. Further, I think UCL and St Andies present themselves as much stronger candidates academically. Another thing to consider here, though, is that St Andies is in Scotland and so its degrees are generally 4 years long (as opposed 3 years for degree elsewhere in the UK). Perhaps you'd like to have a shorter course and in that case you should go for an English university.

There are two campuses Durham uses. One, naturally, is in the city of Durham (and you will see on Durham's website that most courses are at the City campus); the other one is in Stockton and is called Queen's Campus. I think a lot of the people you speak with in your country might have studied at the campus in Durham, rather than the campus in Stockton. Anyone who studies a degree subject other than business likely studied in the city.

That being said, you might have come by people who studied business at the Stockton campus and they might have enjoyed it. Be warned that you might not like it, though. Further, I think UCL and St Andies present themselves as much stronger candidates academically. Another thing to consider here, though, is that St Andies is in Scotland and so its degrees are generally 4 years long (as opposed 3 years for degree elsewhere in the UK). Perhaps you'd like to have a shorter course and in that case you should go for an English university.

Still curious...what's wrong with Queen campus?