[avs733]

So with some searching…

In the UK you can apply to upto five colleges.

In the US the recommendation seems to be between 5-8

[pc86]

On the sixth application does someone knock on your door?

[OLL_IE]

I know this is probably a /s but in the UK you apply through a service called UCAS not directly to the university, and UCAS only allow you to apply to 5 universities.