| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. R Thomas vs R Bailey |
| ½-½ | 33 | 1969 | British Championship | B90 Sicilian, Najdorf |
| 27. P M Jamieson vs R Thomas |
| 0-1 | 38 | 1969 | British Championship | A07 King's Indian Attack |
| 28. F Parr vs R Thomas |
| 1-0 | 28 | 1969 | British Championship | A05 Reti Opening |
| 29. R Thomas vs A H Perkins |
| 1-0 | 30 | 1969 | British Championship | B07 Pirc |
| 30. R Thomas vs J Penrose |
| 0-1 | 44 | 1969 | British Championship | B40 Sicilian |
| 31. F N Stephenson vs R Thomas |
| ½-½ | 21 | 1969 | British Championship | A34 English, Symmetrical |
| 32. R Thomas vs M H Horton |
| ½-½ | 30 | 1969 | British Championship | C90 Ruy Lopez, Closed |
| 33. B Cafferty vs R Thomas |
| ½-½ | 19 | 1969 | British Championship | A16 English |
| 34. R Thomas vs G H Bennett |
| ½-½ | 59 | 1974 | British Championship | B45 Sicilian, Taimanov |
| 35. A Ludgate vs R Thomas |
| 1-0 | 45 | 1974 | British Championship | D35 Queen's Gambit Declined |
| 36. R Thomas vs I Sinclair |
| ½-½ | 37 | 1974 | British Championship | B47 Sicilian, Taimanov (Bastrikov) Variation |
| 37. M J Lightfoot vs R Thomas |
| 1-0 | 43 | 1974 | British Championship | C67 Ruy Lopez |
| 38. R Thomas vs D M Wise |
| ½-½ | 37 | 1974 | British Championship | B25 Sicilian, Closed |
| 39. S Swanson vs R Thomas |
| ½-½ | 42 | 1974 | British Championship | D31 Queen's Gambit Declined |
| 40. R Thomas vs B Eley |
| 1-0 | 21 | 1974 | British Championship | E46 Nimzo-Indian |
| 41. G Botterill vs R Thomas |
  | 1-0 | 18 | 1974 | British Championship | C45 Scotch Game |
| 42. R Thomas vs D Mabbs |
| 0-1 | 54 | 1974 | British Championship | D80 Grunfeld |
| 43. O Hardy vs R Thomas |
| ½-½ | 16 | 1974 | British Championship | D00 Queen's Pawn Game |
| 44. A J Morley vs R Thomas |
| 1-0 | 41 | 1977 | British Championship | C45 Scotch Game |
| 45. R Thomas vs M J Haygarth |
| ½-½ | 25 | 1977 | British Championship | C16 French, Winawer |
| 46. J I Century vs R Thomas |
| ½-½ | 26 | 1977 | British Championship | A09 Reti Opening |
| 47. R Thomas vs P H Clarke |
| 1-0 | 34 | 1977 | British Championship | A10 English |
| 48. M Fuller vs R Thomas |
| 1-0 | 65 | 1977 | British Championship | B20 Sicilian |
| 49. R Thomas vs C W Baker |
| 1-0 | 38 | 1977 | British Championship | B36 Sicilian, Accelerated Fianchetto |
| 50. N Benjamin vs R Thomas |
| 0-1 | 29 | 1977 | British Championship | D01 Richter-Veresov Attack |
Kibitzing
