Kyle Edmund will play at the Queen's Club Championships in June - his first appearance on home soil since taking over as British number one.
The world number 26 moved to the top of the British rankings in March, replacing Andy Murray who had held the position for 12 years.
It will be 23-year-old Edmund's fourth appearance at the Queen's Club.
Defending champion Feliciano Lopez has also been confirmed for the tournament, joining former winner Rafael Nadal.
Spain's Lopez won the 2017 trophy at the 12th time of asking, beating Marin Cilic 4-6 7-6 (7-2) 7-6 (10-8) in the final.