| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. Flohr vs P N Wallis |
| 1-0 | 30 |
1939 |
Bournemouth | D46 Queen's Gambit Declined Semi-Slav |
| 2. P N Wallis vs Mieses |
| 0-1 | 34 |
1939 |
Bournemouth | B00 Uncommon King's Pawn Opening |
| 3. P N Wallis vs S Landau |
| 0-1 | 59 |
1939 |
Bournemouth | D87 Grunfeld, Exchange |
| 4. P N Wallis vs Euwe |
 | 0-1 | 29 |
1939 |
Bournemouth | E85 King's Indian, Samisch, Orthodox Variation |
| 5. E Klein vs P N Wallis |
| 1-0 | 30 |
1939 |
Bournemouth | D26 Queen's Gambit Accepted |
| 6. B H Wood vs P N Wallis |
 | 1-0 | 38 |
1945 |
British Correspondence Championship -6 | C17 French, Winawer, Advance |
| 7. T Jones vs P N Wallis |
| 1-0 | 29 |
1946 |
Nottingham-B1 | C00 French Defense |
| 8. R H Newman vs P N Wallis |
| 1-0 | 54 |
1946 |
Nottingham-B1 | E62 King's Indian, Fianchetto |
| 9. P N Wallis vs Tartakower |
| 0-1 | 39 |
1949 |
Southsea | A04 Reti Opening |
| 10. Aitken vs P N Wallis |
| 1-0 | 43 |
1949 |
Southsea | C18 French, Winawer |
| 11. Rossolimo vs P N Wallis |
 | 1-0 | 37 |
1949 |
Southsea | C05 French, Tarrasch |
| 12. M Haygarth vs P N Wallis |
| 1-0 | 51 |
1959 |
BCF-ch | C05 French, Tarrasch |
| 13. P N Wallis vs D Ellison |
| 0-1 | 35 |
1959 |
BCF-ch | E67 King's Indian, Fianchetto |
| 14. A Thomas vs P N Wallis |
| 1-0 | 60 |
1959 |
BCF-ch | C01 French, Exchange |
| 15. P N Wallis vs J Penrose |
| 0-1 | 22 |
1959 |
BCF-ch | B08 Pirc, Classical |
| 16. P N Wallis vs Wade |
| 0-1 | 16 |
1959 |
BCF-ch | D33 Queen's Gambit Declined, Tarrasch |
| 17. B H Wood vs P N Wallis |
| 1-0 | 31 |
1959 |
BCF-ch | E00 Queen's Pawn Game |
| 18. P N Wallis vs C Hilton |
 | 0-1 | 33 |
1962 |
Whitby British ch | E42 Nimzo-Indian, 4.e3 c5, 5.Ne2 (Rubinstein) |
| 19. P Clarke vs P N Wallis |
| 1-0 | 77 |
1962 |
Whitby British ch | A46 Queen's Pawn Game |
| 20. P N Wallis vs R A Fuller |
| 0-1 | 29 |
1962 |
Whitby British ch | A56 Benoni Defense |
| 21. P N Wallis vs D G Wells |
| 0-1 | 40 |
1962 |
Whitby British ch | E40 Nimzo-Indian, 4.e3 |
| 22. P N Wallis vs J H Beaty |
| 0-1 | 32 |
1962 |
Whitby British ch | E90 King's Indian |
| 23. Hartston vs P N Wallis |
| 1-0 | 37 |
1970 |
BCF-ch | C17 French, Winawer, Advance |
| 24. R G Eales vs P N Wallis |
| 1-0 | 41 |
1970 |
BCF-ch | E17 Queen's Indian |
| 25. P Clarke vs P N Wallis |
| 1-0 | 38 |
1970 |
BCF-ch | E16 Queen's Indian |