Ted's family agrees to move to London in Ted Lasso season 4.
At the end of the premiere, Ted asks Michelle and Henry how they would feel about moving to London. They agree that relocating there would be a good idea, creating a possible family reunion around Ted's return to Richmond.
The decision follows Ted's period living in Kansas City after leaving AFC Richmond. London is where Richmond is based and where Ted's new coaching opportunity awaits. Kansas City remains important to the story because it is Ted's home and the setting for the opening portion of the season, but it is not the destination proposed in this conversation.