Game |
| Result | Moves |
Year | Event/Locale | Opening |
1. R G Wade vs R Thomas |
 | ½-½ | 31 | 1967 | British Championship | D30 Queen's Gambit Declined |
2. R Thomas vs B Cafferty |
| ½-½ | 31 | 1967 | British Championship | B39 Sicilian, Accelerated Fianchetto, Breyer Variation |
3. P J Meade vs R Thomas |
| 1-0 | 32 | 1967 | British Championship | B44 Sicilian |
4. R Thomas vs L P Burnett |
| 0-1 | 33 | 1967 | British Championship | B32 Sicilian |
5. T Thynne vs R Thomas |
| 0-1 | 44 | 1967 | British Championship | A06 Reti Opening |
6. R Thomas vs A Ludgate |
| 0-1 | 40 | 1967 | British Championship | C91 Ruy Lopez, Closed |
7. J Hawson vs R Thomas |
| 0-1 | 33 | 1967 | British Championship | E43 Nimzo-Indian, Fischer Variation |
8. R Thomas vs D B Pritchard |
| ½-½ | 37 | 1967 | British Championship | B08 Pirc, Classical |
9. J L Seppings vs R Thomas |
| ½-½ | 29 | 1967 | British Championship | A22 English |
10. R Thomas vs F N Stephenson |
| ½-½ | 56 | 1967 | British Championship | C75 Ruy Lopez, Modern Steinitz Defense |
11. M Macdonald-Ross vs R Thomas |
| 1-0 | 59 | 1967 | British Championship | D45 Queen's Gambit Declined Semi-Slav |
12. R Thomas vs P W Hempson |
| ½-½ | 18 | 1968 | British Championship | D05 Queen's Pawn Game |
13. L Tate vs R Thomas |
| 1-0 | 30 | 1968 | British Championship | C09 French, Tarrasch, Open Variation, Main line |
14. R Thomas vs M Basman |
| 0-1 | 40 | 1968 | British Championship | B02 Alekhine's Defense |
15. R H Watson vs R Thomas |
| 1-0 | 41 | 1968 | British Championship | C13 French |
16. R Thomas vs L P Burnett |
| ½-½ | 46 | 1968 | British Championship | C74 Ruy Lopez, Modern Steinitz Defense |
17. J M Aitken vs R Thomas |
| 1-0 | 49 | 1968 | British Championship | C05 French, Tarrasch |
18. M Brigden vs R Thomas |
| 0-1 | 27 | 1968 | British Championship | D74 Neo-Grunfeld, 6.cd Nxd5, 7.O-O |
19. R Thomas vs G Speed |
| 1-0 | 38 | 1968 | British Championship | C91 Ruy Lopez, Closed |
20. G Bonner vs R Thomas |
| 0-1 | 52 | 1968 | British Championship | A34 English, Symmetrical |
21. R Thomas vs F Parr |
| 1-0 | 49 | 1968 | British Championship | B29 Sicilian, Nimzovich-Rubinstein |
22. Golombek vs R Thomas |
| 0-1 | 42 | 1968 | British Championship | E67 King's Indian, Fianchetto |
23. P Bielby vs R Thomas |
| 1-0 | 27 | 1969 | British Championship | B04 Alekhine's Defense, Modern |
24. R Thomas vs R Bellin |
| 1-0 | 57 | 1969 | British Championship | A00 Uncommon Opening |
25. D Lees vs R Thomas |
| ½-½ | 23 | 1969 | British Championship | D77 Neo-Grunfeld, 6.O-O |