Can foreign immigrants take an oath before entering Britain to better integrate?

First of all, France and Britain are both non-immigrant supporting countries, and the immigration cost in Britain is much higher than that in France.

Compared with the living comfort after immigration, France is relatively more comfortable. Secondly, since France is a Schengen visa country, holders of French permanent residence cards can go to other Schengen countries in the European Union at will.

But if we consider the future education, Britain is dominant, and the education level is still world-class. There is little difference in medical benefits between the two countries.