Job Recruitment Website - Immigration policy - I only signed a visa to go to the UK. Can I fly to Paris and then transfer to London?

I only signed a visa to go to the UK. Can I fly to Paris and then transfer to London?

Two situations

First, if you have a British visa and a British residence permit, you can transit within the EU and get a one-day visa on arrival.

Second, if you only have a British visa, you can only transit through the EU and cannot leave the airport. This means that when you buy a ticket, you should pay attention to whether you are required to change airports.