The combined group will have a global presence in over 40 countries, serving around 50 million monthly active users, the companies said.

DoorDash has agreed to buy the UK-based food delivery service in a deal worth around $3.9 billion. It adds nine new countries to DoorDash’s global reach, which will now stand at over 40 countries and 50 million monthly active users.

DoorDash said on Tuesday it has agreed to buy its U.K. rival Deliveroo for about £2.9 billion (around $3.85 billion).