| Nov 2, 2025 | Jones | 1–0 | Merriman | Round 2: Jones, Steven A - Merriman, James | French Defense: McCutcheon Variation, Bernstein Variation | |
| Nov 1, 2025 | Merriman | 1–0 | Nakara Husain | Round 1: Merriman, James - Nakara Husain | Queen's Gambit Declined: Exchange Variation, Reshevsky Variation | |
| Jul 20, 2025 | Merry | 1–0 | Merriman | ECF English Open Championship 2025 | Benoni Defense: Fianchetto Variation | |
| Jul 20, 2025 | Merriman | 1–0 | Norris | ECF English Open Championship 2025 | King's Indian Defense: Steiner Attack | |
| Jul 19, 2025 | Badacsonyi | 1–0 | Merriman | ECF English Open Championship 2025 | English Opening: Symmetrical Variation, Mecking Variation | |
| Jul 19, 2025 | Merriman | ½–½ | Emms | ECF English Open Championship 2025 | Nimzo-Indian Defense: Classical Variation | |
| Jul 18, 2025 | Watson | 0–1 | Merriman | ECF English Open Championship 2025 | Zukertort Opening: Nimzo-Larsen Variation | |
| Jul 18, 2025 | Merriman | 1–0 | Salmons | ECF English Open Championship 2025 | Semi-Slav Defense: Stoltz Variation | |
| Jul 18, 2025 | Hertog | ½–½ | Merriman | ECF English Open Championship 2025 | Benoni Defense: Fianchetto Variation, Hastings Defense, Main Line | |
| Jun 26, 2025 | Pert | ½–½ | Merriman | Round 6: Pert, Max - Merriman, James | Trompowsky Attack | |
| Jun 26, 2025 | Merriman | ½–½ | Rastogi | Round 5: Merriman, James - Rastogi, Nayan Keats | Nimzo-Indian Defense: Classical Variation, Keres Defense | |
| Jun 25, 2025 | Merriman | ½–½ | Clery | Round 4: Merriman, James - Clery, Liam | Nimzo-Indian Defense: St. Petersburg Variation | |
| Jun 25, 2025 | Mesropyan | 0–1 | Merriman | Round 3: Mesropyan, Hayk - Merriman, James | French Defense: Paulsen Variation | |
| Jun 25, 2025 | Vaidyanathan | 0–1 | Merriman | Round 2: Vaidyanathan, Adithya - Merriman, James | Benoni Defense: Classical Variation, New York Variation | |
| Jun 25, 2025 | Merriman | ½–½ | Dasgupta | Round 1: Merriman, James - Dasgupta, Avyukt | Slav Defense: Chebanenko Variation | |
| May 5, 2025 | Baker | ½–½ | Merriman | Round 11: Baker, Chris W - Merriman, James | King's Indian Attack: Spassky Variation | |
| May 4, 2025 | Merriman | ½–½ | Saunders | Round 10: Merriman, James - Saunders, Aron | Slav Defense: Czech Variation, Dutch Variation | |
| May 3, 2025 | Terler | * | Merriman | Round 9: Terler, Bohdan - Merriman, James | ? | |
| Feb 16, 2025 | Merriman | ½–½ | Zakarian | Round 6: Merriman, James - Zakarian, Dimitrios Levon | Nimzo-Indian Defense: Classical Variation | |
| Feb 8, 2025 | McAtear | 1–0 | Merriman | Blackpool Open 2025 | French Defense: Schlechter Variation | |
| Feb 7, 2025 | Merriman | 1–0 | Bakhtiyarov | Blackpool Open 2025 | Queen's Gambit Declined: Janowski Variation | |
| Jul 31, 2024 | Merriman | ½–½ | Pal | Round 5: Merriman, James - Pal, Rohan | Queen's Gambit Declined: Charousek Variation | |
| Jul 29, 2024 | Kalaiyalahan | 1–0 | Merriman | Round 3: Kalaiyalahan, Akshaya - Merriman, James | Benoni Defense: Fianchetto Variation | |
| Jul 28, 2024 | Banerjee | 1–0 | Merriman | Round 2: Banerjee, Supratit - Merriman, James | French Defense: Advance Variation | |
| Jul 27, 2024 | Merriman | 0–1 | Kalavannan | Round 1: Merriman, James - Kalavannan, Koby | Benko Gambit Declined: Sosonko Variation | |
| Jul 25, 2024 | Szakmany | 0–1 | Merriman | Round 5: Szakmany, Bence - Merriman, James | French Defense: Exchange Variation | |
| Jul 24, 2024 | Merriman | 1–0 | Vadalia | Round 4: Merriman, James - Vadalia, Jainill | Nimzo-Indian Defense: Classical Variation, Noa Variation | |
| Jul 24, 2024 | Barnes | ½–½ | Merriman | Round 3: Barnes, Oliver - Merriman, James | French Defense: Winawer Variation, Delayed Exchange Variation | |
| Jul 23, 2024 | Merriman | 1–0 | Kovalskyi | Round 2: Merriman, James - Kovalskyi, Roman | Queen's Gambit Accepted: Central Variation, McDonnell Defense | |
| Jul 23, 2024 | Evans | 1–0 | Merriman | Round 1: Evans, Ruben - Merriman, James | Benoni Defense: Knight's Tour Variation | |
| Jul 19, 2024 | Merriman | * | Payne | Round 3: Merriman, James - Payne, Matthew J | ? | |
| Jul 17, 2024 | Merriman | * | Pal | Round 1: Merriman, James - Pal, Rohan | ? | |
| Nov 30, 2024 | Merriman | 0–1 | Balaji | Round 3: Merriman, James - Balaji, Aaravamudhan | King's Indian Defense: Steiner Attack | |
| Nov 29, 2024 | Thorfinnsson | 1–0 | Merriman | Round 1: Thorfinnsson, Bjorn - Merriman, James | Indian Defense: Spielmann-Indian | |
| Aug 4, 2024 | Merriman | ½–½ | Verma | Round 9: Merriman, James - Verma, Aditya | Slav Defense: Czech Variation, Classical System, Main Line | |
| Aug 3, 2024 | Hryshchenko | 1–0 | Merriman | Round 8: Hryshchenko, Kamila - Merriman, James | French Defense: King's Indian Attack | |
| Aug 2, 2024 | Merriman | 1–0 | Arnott | Round 7: Merriman, James - Arnott, Jonathan W | Benko Gambit Accepted: Fully Accepted Variation | |
| Aug 1, 2024 | Lentzos | 1–0 | Merriman | Round 6: Lentzos, Ioanis - Merriman, James | English Opening | |
| Jul 30, 2024 | Merriman | 1–0 | Beaumont | Round 4: Merriman, James - Beaumont, Chris R | King's Indian Defense: Steiner Attack | |
| Jul 30, 2023 | Nigel Re Alldritt | 1–0 | James Merriman | British Chess Championships 2023: Championship | Benoni Defense: Fianchetto Variation | |
| Jul 28, 2023 | Eggleston | 1–0 | Merriman | British Chess Championships 2023: Championship | French Defense: Steinitz Variation, Boleslavsky Variation | |
| Jul 26, 2023 | Weersing | 0–1 | Merriman | British Chess Championships 2023: Championship | Nimzo-Indian Defense: Classical Variation, Noa Variation | |
| Jul 25, 2023 | Rudd | 1–0 | Merriman | British Chess Championships 2023: Championship | Nimzo-Indian Defense: St. Petersburg Variation, American Variation | |
| Jul 24, 2023 | Merriman | ½–½ | Pigott | British Chess Championships 2023: Championship | Nimzo-Indian Defense: Normal Variation, Botvinnik System | |
| Jul 23, 2023 | Merriman | 1–0 | Kolbus | British Chess Championships 2023: Championship | Nimzo-Indian Defense: Rubinstein System | |
| Jul 22, 2023 | Derakhshani | 1–0 | Merriman | British Chess Championships 2023: Championship | French Defense: Steinitz Variation, Boleslavsky Variation | |
| May 29, 2023 | Merriman | ½–½ | Liu | English Open Championships 2023 | Grünfeld Defense: Three Knights Variation, Hungarian Attack | |
| May 28, 2023 | Merriman | ½–½ | Murawski | English Open Championships 2023 | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| May 28, 2023 | Pal | ½–½ | Merriman | English Open Championships 2023 | English Opening | |
| May 27, 2023 | Merriman | ½–½ | Fellowes | English Open Championships 2023 | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| May 27, 2023 | Gordon | ½–½ | Merriman | English Open Championships 2023 | King's Indian Attack: Symmetrical Defense | |
| Oct 16, 2022 | Merriman | 1–0 | Kovalskyi | Hull 4NCL International Open | Tarrasch Defense: Schara Gambit | |
| Oct 16, 2022 | Sowray | ½–½ | Merriman | Hull 4NCL International Open | Nimzo-Indian Defense: St. Petersburg Variation, American Variation | |
| Oct 15, 2022 | Merriman | 1–0 | Birtwistle | Hull 4NCL International Open | Benko Gambit Declined: Sosonko Variation | |
| Oct 15, 2022 | Wells | * | Merriman | Hull 4NCL International Open | English Opening: Symmetrical Variation, Four Knights Variation | |
| Oct 14, 2022 | Ilett | 0–1 | Merriman | Hull 4NCL International Open | ? | |
| Aug 21, 2022 | Mckay | 1–0 | Merriman | Chessable British Chess Championships: Major Open | French Defense: Schlechter Variation | |
| Aug 20, 2022 | Merriman | 1–0 | Burton | Chessable British Chess Championships: Major Open | King's Indian Defense: Kramer Variation | |
| Aug 19, 2022 | Johnson | 1–0 | Merriman | Chessable British Chess Championships: Major Open | Indian Defense: Anti-Nimzo-Indian | |
| Aug 18, 2022 | Merriman | 0–1 | Ogunshola | Chessable British Chess Championships: Major Open | Modern Defense: Averbakh System | |
| Aug 17, 2022 | Alldritt | 0–1 | Merriman | Chessable British Chess Championships: Major Open | Catalan Opening | |
| Aug 16, 2022 | Merriman | 1–0 | Volovich | Chessable British Chess Championships: Major Open | Grünfeld Defense: Three Knights Variation, Hungarian Attack | |
| Aug 15, 2022 | Renshaw | 0–1 | Merriman | Chessable British Chess Championships: Major Open | French Defense: Steinitz Variation, Boleslavsky Variation | |
| Aug 14, 2022 | Merriman | 0–1 | Kumar | Chessable British Chess Championships: Major Open | Semi-Slav Defense | |
| Aug 13, 2022 | Ashworth | 0–1 | Merriman | Chessable British Chess Championships: Major Open | French Defense: Tarrasch Variation, Morozevich Variation | |
| May 1, 2022 | Merriman | ½–½ | Nelson | 4NCL Main League 1-2 | Old Indian Defense | |
| Apr 30, 2022 | Sygnowski | 1–0 | Merriman | 4NCL Main League 1-2 | French Defense: Exchange Variation | |
| Mar 26, 2022 | Merriman | 1–0 | Ratnesan | 4NCL Main League 1-2 | Nimzo-Indian Defense: Normal Variation, Classical Defense | |
| Feb 13, 2022 | Stewart | ½–½ | Merriman | 4NCL Main League 1-2 | English Opening: Symmetrical Variation, Ultra-Symmetrical Variation | |
| Feb 12, 2022 | Merriman | ½–½ | Franco | 4NCL Main League 1-2 | Queen's Gambit Declined: Charousek Variation | |
| Nov 28, 2021 | Pelling | * | Merriman | 4NCL Division 1_2 | ? | |
| Nov 27, 2021 | Merriman | * | Blake | 4NCL Division 1_2 | ? | |
| Aug 29, 2021 | Merriman | * | Pink | Northumbria Masters | Queen's Pawn Game | |
| Aug 27, 2021 | Merriman | 0–1 | Brown | Northumbria Masters | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Aug 27, 2021 | Modi | ½–½ | Merriman | Northumbria Masters | Benoni Defense: Fianchetto Variation | |
| — | Merriman | ½–½ | Kanyamarala | British Chess Championships 2023: Championship | Nimzo-Indian Defense: Normal Variation, Botvinnik System | |
| — | Merriman | 1–0 | Richards | Round 1: Merriman, James - Richards, Alexander | Queen's Pawn Game | |
| — | Merriman | 0–1 | Feuerstack | Round 3: Merriman, James - Feuerstack, Aljoscha | Slav Defense | |
| — | Willow | ½–½ | Merriman | Round 2: Willow, Jonah B - Merriman, James | French Defense: Advance Variation, Lputian Variation | |
