| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. O Jackson vs I El-Gheiadi |
| 1-0 | 34 | 1983 | Hastings Challengers /84 | B23 Sicilian, Closed |
| 27. O Jackson vs M Basman |
| 0-1 | 30 | 1985 | British Championship | C00 French Defense |
| 28. O M Hindle vs O Jackson |
| 1-0 | 35 | 1985 | British Championship | B43 Sicilian, Kan, 5.Nc3 |
| 29. O Jackson vs D Wallace |
| 1-0 | 28 | 1985 | British Championship | B23 Sicilian, Closed |
| 30. G W Lawton vs O Jackson |
| 1-0 | 29 | 1985 | British Championship | B42 Sicilian, Kan |
| 31. S Gregory vs O Jackson |
| 0-1 | 40 | 1985 | British Championship | A07 King's Indian Attack |
| 32. O Jackson vs R Buckmire |
| ½-½ | 42 | 1985 | British Championship | B23 Sicilian, Closed |
| 33. T Upton vs O Jackson |
| ½-½ | 44 | 1985 | British Championship | B84 Sicilian, Scheveningen |
| 34. O Jackson vs E Teichmann |
| 1-0 | 42 | 1985 | British Championship | C33 King's Gambit Accepted |
| 35. O Jackson vs N Ivell |
| 0-1 | 43 | 1985 | British Championship | B23 Sicilian, Closed |
| 36. G West vs O Jackson |
| ½-½ | 42 | 1985 | British Championship | B22 Sicilian, Alapin |
| 37. O Jackson vs K Arkell |
| 0-1 | 39 | 1985 | British Championship | B23 Sicilian, Closed |
| 38. O Jackson vs G Flear |
| ½-½ | 32 | 1987 | England | C30 King's Gambit Declined |
| 39. A Bykhovsky vs O Jackson |
| 1-0 | 34 | 1989 | Hastings Challengers 1989/90 | A57 Benko Gambit |
| 40. G Timoscenko vs O Jackson |
| 1-0 | 31 | 1990 | Hastings Challengers 1990/91 | A52 Budapest Gambit |
| 41. O Jackson vs Adams |
  | 0-1 | 31 | 1991 | Sheffield | C33 King's Gambit Accepted |
| 42. O Jackson vs B Thipsay |
| 1-0 | 30 | 1991 | British Championship | B17 Caro-Kann, Steinitz Variation |
| 43. P Thipsay vs O Jackson |
| 1-0 | 38 | 1991 | British Championship | B42 Sicilian, Kan |
| 44. O Jackson vs F Rayner |
| 1-0 | 43 | 1991 | British Championship | B23 Sicilian, Closed |
| 45. D Rosenberg vs O Jackson |
| 1-0 | 20 | 1991 | British Championship | A52 Budapest Gambit |
| 46. O Jackson vs Aylem M Salem |
| 1-0 | 30 | 1991 | British Championship | B00 Uncommon King's Pawn Opening |
| 47. D Coleman vs O Jackson |
| 0-1 | 91 | 1991 | British Championship | B42 Sicilian, Kan |
| 48. O Jackson vs Plaskett |
| 0-1 | 32 | 1991 | British Championship | B23 Sicilian, Closed |
| 49. T Mordue vs O Jackson |
| 1-0 | 50 | 1991 | British Championship | B42 Sicilian, Kan |
| 50. O Jackson vs A Mortazavi |
| 0-1 | 34 | 1991 | British Championship | C41 Philidor Defense |
Kibitzing
