University College London vs Wharton school of the university of Pennsylvania (undergraduate)

Oh the Oxford/NYU/Wharton guy again. I am surprised to see how much they have lowered their English language requirements these days.

I suggest you stop posting these questions here. 

Also, what even is University School London?

Wharton > UCL and it's not close

dude its a no brainer, Wharton, idk why u even ask

I mean where do you want to work?

UCL places equally as well as Oxbridge for IB at undergrad level

English level is concerning for either school, but in general: Wharton > UCL > UPenn should you ever wish to return home to Europe (ex-UK). 

Wharton is a no brainer if you're going for finance, and while UCL is a (lower) target school in the UK, being at a target affords you much greater opportunities in the US than in the UK. Wharton will also have much better alumni, better resources, and better facilities. UCL probably has more international prestige (due to the league tables and location) but UPenn is still a solid Ivy and, more importantly, Wharton is known around the world within business/financial spheres. 

Any marginal difference in layman's prestige or academic reputation back in Europe is not worth sacrificing Wharton for, given the strength of its brand both in the US and international finance community.