| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. Pavasovic vs S Williams |
| 1-0 | 40 |
1994 |
Budapest FS02 IM-B | C00 French Defense |
| 2. V Malakhov vs S Williams |
| 1-0 | 43 |
1997 |
EU-ch U20 | C05 French, Tarrasch |
| 3. Emms vs S Williams |
| ½-½ | 29 |
1999 |
4 Nations Chess League | C06 French, Tarrasch |
| 4. D King vs S Williams |
| ½-½ | 24 |
2000 |
Miercurea Ciuc | C18 French, Winawer |
| 5. Emms vs S Williams |
 | 1-0 | 37 |
2001 |
Smith & Williamson ch-GBR | C05 French, Tarrasch |
| 6. J Gallagher vs S Williams |
| 1-0 | 22 |
2001 |
4NCL | C17 French, Winawer, Advance |
| 7. M Goodger vs S Williams |
| 0-1 | 55 |
2001 |
10th Monarch Assurance | C02 French, Advance |
| 8. R Van Kemenade vs S Williams |
| 0-1 | 29 |
2001 |
10th Monarch Assurance | C00 French Defense |
| 9. M Lyell vs S Williams |
| 0-1 | 33 |
2001 |
Smith & Williamson ch-GBR | C02 French, Advance |
| 10. S Collins vs S Williams |
| 1-0 | 72 |
2002 |
British Chess Championships | C05 French, Tarrasch |
| 11. N Hutchinson vs S Williams |
 | 0-1 | 35 |
2002 |
British Chess Championships | C05 French, Tarrasch |
| 12. Hebden vs S Williams |
| 1-0 | 39 |
2003 |
Essent Open | C18 French, Winawer |
| 13. G Jones vs S Williams |
| 0-1 | 38 |
2004 |
Smith & Williamson British Championships | C04 French, Tarrasch, Guimard Main line |
| 14. J Houska vs S Williams |
| ½-½ | 62 |
2004 |
Smith & Williamson British Championships | C02 French, Advance |
| 15. Tiviakov vs S Williams |
| 1-0 | 40 |
2005 |
Gausdal Classics | C06 French, Tarrasch |
| 16. R Krasiewicz vs S Williams |
| 0-1 | 34 |
2005 |
6th European Individual Championship | C01 French, Exchange |
| 17. S Erenburg vs S Williams |
| ½-½ | 65 |
2005 |
Hastings Chess Congress | C05 French, Tarrasch |
| 18. Kotronias vs S Williams |
| ½-½ | 56 |
2005 |
13th Cork Chess Congress | C06 French, Tarrasch |
| 19. Sasikiran vs S Williams |
 | 1-0 | 26 |
2005 |
Gibraltar Masters | C18 French, Winawer |
| 20. S Haslinger vs S Williams |
| 1-0 | 43 |
2005 |
Smith & Williamson British Championships | C06 French, Tarrasch |
| 21. P Ofstad vs S Williams |
| 0-1 | 44 |
2005 |
Gibraltar Masters | C05 French, Tarrasch |
| 22. Areshchenko vs S Williams |
| 1-0 | 32 |
2005 |
2nd Coventry Chess International | C18 French, Winawer |
| 23. J Rudd vs S Williams |
| ½-½ | 69 |
2005 |
First Saturday September | C01 French, Exchange |
| 24. M White vs S Williams |
 | 0-1 | 113 |
2005 |
Smith & Williamson British Championships | C02 French, Advance |
| 25. Kulaots vs S Williams |
| 1-0 | 59 |
2005 |
Gausdal Classics | C18 French, Winawer |