| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. R Khadilkar vs D Houston |
| 0-1 | 38 | 1986 | Commonwealth Championship | B92 Sicilian, Najdorf, Opocensky Variation |
| 27. D Houston vs W Paust |
| ½-½ | 40 | 1986 | Commonwealth Championship | B21 Sicilian, 2.f4 and 2.d4 |
| 28. S R Mannion vs D Houston |
| ½-½ | 42 | 1986 | Commonwealth Championship | B50 Sicilian |
| 29. D Houston vs S Tilak |
| 1-0 | 15 | 1986 | Commonwealth Championship | B21 Sicilian, 2.f4 and 2.d4 |
| 30. Plaskett vs D Houston |
| 1-0 | 113 | 1989 | British Championship | A45 Queen's Pawn Game |
| 31. D Houston vs J Stewart |
| ½-½ | 45 | 1989 | British Championship | C43 Petrov, Modern Attack |
| 32. L Cooper vs D Houston |
| ½-½ | 58 | 1989 | British Championship | C78 Ruy Lopez |
| 33. D Houston vs C Forbes |
| ½-½ | 13 | 1989 | British Championship | B28 Sicilian, O'Kelly Variation |
| 34. D Tebb vs D Houston |
| ½-½ | 32 | 1989 | British Championship | C99 Ruy Lopez, Closed, Chigorin, 12...cd |
| 35. D Houston vs P Large |
| 0-1 | 37 | 1989 | British Championship | B53 Sicilian |
| 36. C Franklin vs D Houston |
| 0-1 | 53 | 1989 | British Championship | E91 King's Indian |
| 37. D Houston vs G Lane |
| 0-1 | 15 | 1989 | British Championship | C64 Ruy Lopez, Classical |
| 38. J Grant vs D Houston |
| 0-1 | 32 | 1989 | British Championship | A16 English |
| 39. D Houston vs L McLaren |
| 1-0 | 40 | 1989 | British Championship | C07 French, Tarrasch |
| 40. L Ravi vs D Houston |
| 1-0 | 38 | 1989 | British Championship | A69 Benoni, Four Pawns Attack, Main line |
| 41. S Jakob vs D Houston |
| 1-0 | 48 | 1990 | 14th Lloyds Bank Masters Open | E92 King's Indian |
| 42. R Beckett vs D Houston |
| ½-½ | 62 | 1990 | 14th Lloyds Bank Masters Open | C24 Bishop's Opening |
| 43. D Houston vs G Micalizzi |
| 1-0 | 36 | 1990 | 14th Lloyds Bank Masters Open | B21 Sicilian, 2.f4 and 2.d4 |
| 44. D Houston vs S Cullip |
| 0-1 | 42 | 1990 | 14th Lloyds Bank Masters Open | B40 Sicilian |
| 45. Rahman vs D Houston |
| 0-1 | 46 | 1990 | 14th Lloyds Bank Masters Open | C45 Scotch Game |
| 46. D Houston vs N Noden |
| ½-½ | 38 | 1990 | 14th Lloyds Bank Masters Open | B40 Sicilian |
| 47. E Campbell vs D Houston |
| 0-1 | 38 | 1990 | 14th Lloyds Bank Masters Open | E62 King's Indian, Fianchetto |
| 48. D Houston vs G Burgess |
| ½-½ | 27 | 1990 | 14th Lloyds Bank Masters Open | B03 Alekhine's Defense |
| 49. S Calderwood vs D Houston |
| 1-0 | 42 | 1990 | 14th Lloyds Bank Masters Open | E85 King's Indian, Samisch, Orthodox Variation |
| 50. D Houston vs F C W Chin |
| ½-½ | 47 | 1990 | 14th Lloyds Bank Masters Open | C07 French, Tarrasch |
Kibitzing
