Their move back from the United States sparks questions about security, their formal role — and whether the couple could overshadow the official royal family.

The couple's decision to move back to Britain comes after a high-profile split and tell-all memoir. Here are the biggest moments from a tumultuous eight years.

Where Harry and Meghan will live, why they are returning and what it means for the rest of the royals were among the questions British media outlets are scrambling to answer.