Warwick Univeristy: Biggest current super target in London?

A bit random post, but having done a few spring weeks in London I have always been surprised by how many students come from Warwick compared to other universities.

For BB summer class last year Warwick had the same headcount if not more than LSE and for SA 2021 more people doing MBB from Warwick than Oxford.

Also, another interesting thing I have seen is the lack of people from Imperial? I am aware that most people from Imperial doesn't want to go to banking but still shocking that for some summer classes they have 0 people representing the uni.  

Lastly, hope Brexit reduces intake from European MSc.