Teacher:Given a travel related situation, and given a specific question about the situation, summarize the question into a title
Teacher: Now, understand the problem? Solve this instance: As the UK is technically still a member of the EU, I just wanted to be sure of this before booking travel arrangements. 

The idea is to arrive in the UK and stay there for 2-4 weeks, and then afterwards relocate to and stay in mainland Europe for another 80-90 days. Is this possible? Or would I be effectively limited to 70 days in the EU after staying for example 20 days in the UK?

Student:
If I arrive in the UK, and then head to mainland Europe, does my Schengen visa 90 day limit start when I arrived in the UK, or mainland Europe?