| Roles | Referee |
|---|---|
| Sex | Male |
| Full name | John•Balmer |
| Used name | John•Balmer |
| NOC | Great Britain |
| Games | Sport (Discipline) / Event | NOC / Team | Phase | Unit | Role | As | |
|---|---|---|---|---|---|---|---|
| 1964 Summer Olympics | Hockey | GBR |
John Balmer | ||||
| Hockey, Men (Olympic) | Semi-Finals | Pakistan — Spain | Umpire 1 | ||||
| Hockey, Men (Olympic) | Group B | Spain — Netherlands | Umpire 1 | ||||
| Hockey, Men (Olympic) | Group B | Unified Team of Germany — Netherlands | Umpire 2 | ||||
| Hockey, Men (Olympic) | Group B | Netherlands — Belgium | Umpire 2 | ||||
| Hockey, Men (Olympic) | Group B | Netherlands — Malaysia | Umpire 1 | ||||
| 1968 Summer Olympics | Hockey | GBR |
John Balmer | ||||
| Hockey, Men (Olympic) | Classification Round 5-8 | Netherlands — New Zealand | Umpire 1 | ||||
| Hockey, Men (Olympic) | Group A | West Germany — Belgium | Umpire 1 | ||||
| Hockey, Men (Olympic) | Group A | West Germany — Japan | Umpire 1 | ||||
| Hockey, Men (Olympic) | Group A | West Germany — Spain | Umpire 1 | ||||
| Hockey, Men (Olympic) | Group A | India — East Germany | Umpire 1 |