Related Clues:
- Regulator very vigorous? Not I
- Trombone button
- One of four in the human heart
- Soldier keeps to rules I lay down
- Part of the human heart
- Key for a trumpet
- Official (or organisation) responsible for supervision of a particular activity
- Regal tour arranged for governor?
- Supervisory body recalling both pistol and round
- Opening device
- One in charge of large tour abroad
- Controller of number of vehicles you subsequently overheard