| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. P J Murphy vs P C Griffiths |
| 0-1 | 50 |
1962 |
Whitby British u18 ch | E81 King's Indian, Samisch |
| 2. Keene vs P C Griffiths |
  | 1-0 | 28 |
1964 |
British U-18 Championship | E89 King's Indian, Samisch, Orthodox Main line |
| 3. J N Sugden vs P C Griffiths |
| 0-1 | 35 |
1967 |
Oxford Major op | E00 Queen's Pawn Game |
| 4. M Basman vs P C Griffiths |
 | 1-0 | 26 |
1968 |
Wolverhampton | C34 King's Gambit Accepted |
| 5. B Eley vs P C Griffiths |
| 1-0 | 64 |
1970 |
BCF-ch | B44 Sicilian |
| 6. P C Griffiths vs J Littlewood |
| 0-1 | 32 |
1970 |
BCF-ch | D81 Grunfeld, Russian Variation |
| 7. P C Griffiths vs R Bailey |
| ½-½ | 50 |
1970 |
BCF-ch | B50 Sicilian |
| 8. Keene vs P C Griffiths |
| ½-½ | 44 |
1970 |
BCF-ch | A09 Reti Opening |
| 9. P C Doye vs P C Griffiths |
| 0-1 | 49 |
1970 |
BCF-ch | E72 King's Indian |
| 10. P C Griffiths vs G Botterill |
| ½-½ | 55 |
1970 |
BCF-ch | E45 Nimzo-Indian, 4.e3, Bronstein (Byrne) Variation |
| 11. M Haygarth vs P C Griffiths |
| 1-0 | 28 |
1970 |
BCF-ch | A25 English |
| 12. D W Anderton vs P C Griffiths |
| 1-0 | 25 |
1970 |
BCF-ch | E62 King's Indian, Fianchetto |
| 13. R A Lee vs P C Griffiths |
| 0-1 | 46 |
1970 |
BCF-ch | E86 King's Indian, Samisch, Orthodox, 7.Nge2 c6 |
| 14. P C Griffiths vs R O'Kelly |
| ½-½ | 23 |
1970 |
BCF-ch | C26 Vienna |
| 15. P C Griffiths vs V W Knox |
| ½-½ | 40 |
1970 |
BCF-ch | D47 Queen's Gambit Declined Semi-Slav |
| 16. M Basman vs P C Griffiths |
| 1-0 | 21 |
1971 |
Bognor | C34 King's Gambit Accepted |
| 17. P C Griffiths vs Keene |
| 0-1 | 34 |
1971 |
English county match | E73 King's Indian |
| 18. J J Carleton vs P C Griffiths |
| ½-½ | 52 |
1972 |
Birmingham | B93 Sicilian, Najdorf, 6.f4 |
| 19. Jarrett DC vs P C Griffiths |
| 0-1 | 31 |
1972 |
Barnstaple op | C69 Ruy Lopez, Exchange, Gligoric Variation, 6.d4 |
| 20. P C Griffiths vs D W Anderton |
| 1-0 | 46 |
1972 |
Barnstaple op | A73 Benoni, Classical, 9.O-O |
| 21. P C Griffiths vs M Basman |
| 0-1 | 60 |
1972 |
Barnstaple op | E73 King's Indian |
| 22. P C Griffiths vs Tringov |
| 0-1 | 23 |
1974 |
Birmingham | B09 Pirc, Austrian Attack |
| 23. P C Griffiths vs Miles |
 | 0-1 | 43 |
1974 |
Birmingham 17/185 (Minev,NN) | B08 Pirc, Classical |