| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. J Gallagher vs S Williams |
| 1-0 | 32 |
1999 |
Ch Great Britain, Scarborough (England) | B40 Sicilian |
| 2. G Antal vs S Williams |
| 1-0 | 42 |
2001 |
SWYM | B76 Sicilian, Dragon, Yugoslav Attack |
| 3. T Middelburg vs S Williams |
| ½-½ | 29 |
2001 |
SWYM | B76 Sicilian, Dragon, Yugoslav Attack |
| 4. J Gallagher vs S Williams |
| 1-0 | 44 |
2001 |
4NCL | B78 Sicilian, Dragon, Yugoslav Attack, 10.castle long |
| 5. A Harley vs S Williams |
| 0-1 | 21 |
2001 |
4NCL | B22 Sicilian, Alapin |
| 6. P Wells vs S Williams |
| 0-1 | 40 |
2001 |
4NCL | B78 Sicilian, Dragon, Yugoslav Attack, 10.castle long |
| 7. J Rowson vs S Williams |
 | 1-0 | 18 |
2001 |
4NCL | B23 Sicilian, Closed |
| 8. A Corkett vs S Williams |
| 1-0 | 47 |
2002 |
4NCL | B23 Sicilian, Closed |
| 9. Shirov vs S Williams |
 | 1-0 | 54 |
2004 |
BCF-chT 0405 (4NCL) | B75 Sicilian, Dragon, Yugoslav Attack |
| 10. R Pert vs S Williams |
| ½-½ | 20 |
2005 |
Gibraltar Masters | B33 Sicilian |
| 11. S Jessel vs S Williams |
| 1-0 | 45 |
2005 |
Smith & Williamson British Championships | B72 Sicilian, Dragon |
| 12. G Quillan vs S Williams |
| 1-0 | 53 |
2005 |
Gibraltar Masters | B51 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 13. M Al-Modiahki vs S Williams |
| 1-0 | 33 |
2005 |
Amsterdam Chess Tournament | B72 Sicilian, Dragon |
| 14. L Babujian vs S Williams |
| 0-1 | 27 |
2005 |
6th European Individual Championship | B23 Sicilian, Closed |
| 15. O Korneev vs S Williams |
| 1-0 | 33 |
2005 |
Gausdal Classics | B75 Sicilian, Dragon, Yugoslav Attack |
| 16. A Shomoev vs S Williams |
 | 1-0 | 23 |
2005 |
6th European Individual Championship | B78 Sicilian, Dragon, Yugoslav Attack, 10.castle long |
| 17. C Storey vs S Williams |
| ½-½ | 87 |
2005 |
Smith & Williamson British Championships | B22 Sicilian, Alapin |
| 18. V Atlas vs S Williams |
| 1-0 | 56 |
2006 |
European Club Cup | B70 Sicilian, Dragon Variation |
| 19. F Aleskerov vs S Williams |
 | 0-1 | 16 |
2006 |
7th European Individual Championship | B20 Sicilian |
| 20. P Bobras vs S Williams |
| ½-½ | 21 |
2006 |
Hastings Chess Congress | B70 Sicilian, Dragon Variation |
| 21. D Ciuksyte vs S Williams |
| 0-1 | 29 |
2007 |
British Championship | B72 Sicilian, Dragon |
| 22. M White vs S Williams |
| ½-½ | 17 |
2007 |
British Championship | B72 Sicilian, Dragon |
| 23. C Lupulescu vs S Williams |
| 1-0 | 32 |
2007 |
European Individual Championships | B70 Sicilian, Dragon Variation |
| 24. A Ashton vs S Williams |
| 0-1 | 30 |
2007 |
Hastings Chess Congress | B27 Sicilian |
| 25. J Rudd vs S Williams |
| ½-½ | 31 |
2008 |
Hastings Chess Congress | B70 Sicilian, Dragon Variation |