If you plan on staying in any country that applies the strict schengen rules, then you must be aware of those rules. If you go over the 90 day allowance in any schengen rule country, then you face a $10,00 fine and/or deportation.
Most every European country will hold a tourist/visitor to those rules. So if you plan on staying longer, you must leave the shengen country for 90 days before entering the country again.
The United Kingdom does not hold a tourist/visitor accountable for the 90 day rule, however, those countries have their own visa rules.
What I’m saying is to study the rules, and know before you go. Since security has gotten tighter, custom agents, as a rule, look carefully at passports and can assess how long you stayed in the country.