Level 4 arbiter
Level 4 | |
| Phil Chambers - Chief Arbiter | England |
| Dominic O'Brien - Head of Ethics Committee | England |
| Andy Tsz Kit Fong | Hong Kong |
| Angel Yuen Man Lai | Canada/Hong Kong |
| Jennifer Goddard (Resigned) | Australia |
Level Three Arbiters may also officiate at memory world records attempts
Level 3 | |
| Nathalie Lecordier (Resigned) | England |
| Gabriele Kappus (Resigned) | Germany |
Level Two Arbiter acts as a sole WMSC representative at a National Championship and supervise at a World Championship under the overall charge of the Chief Ariber.
Level 2 | |||
| Elaine Colliar | Scotland | Klaus Kolb | Germany |
| Dr Kranthi Raj | India | David Sedgwick | England |
| Idriz Zogaj | Sweden | Khatanbaatar Khandsuren | Mongolia |
| Teo Kim Foo | Malaysia | Anne Bernadette Bonita | Philippines |
| Wang Sheng Kai | Taiwan | Florian Dellé | Germany |
| Riadh Bensaoucha | Algeria | Amine Ahmed Chala | Algeria |
| Salah eddine Djilah | Algeria | Guo Chuanwai | China |
| Sophie Huang | China | ||
Renewal Pending | |||
| Dr Warren Day | Australia | Dionne Reid | England |
| Henry Toi | Singapore | Elizabeth Yu | China |
| Jorge Castanñeda | Mexico | ||
Level One Arbiter entitles to mark and score papers at any WMSc approved competition under supervision of a Level Two Arbiter or the Chief Arbiter.
The list of level one arbiter is for internal use only.
*Special thanks to Dai Griffiths and others for providing the information.