| | | Reading School | | | | | 308658g | | |
| Abdalla | Madjid | M | The Cedars School | | 1060 | | 290053B | | 0 | |
| Abdulla | Murad | M | Scotland | 2313 | 2350 | 2313 | 291190F | | 2403757 | |
| Abou-Raggah | Yassir | | Fortismere S | | | | 310471A | | 0 | |
| Abraham | Jeff | M | Abingdon School | 1548 | 1615 | 1548 | 279032E | | 0 | |
| Acharya | Kandara | F | Bristol GS | 116L | 114L | 1727 | 302192A | ME008485 | 460702 | |
| Acharya | Dwiti | F | Bristol Juniors | 1210 | 1413 | 1210 | 308238G | | 489131 | |
| Acmonier | Finn | | Yateley Manor School | | | | | | | |
| Adams | Henry | M | Brighton College | 1720 | 1570 | 1720 | 302456J | | 464562 | |
| Adams | Edward | | Yarm School | 1570 | 1488 | 1570 | 299153G | | 0 | |
| Adatia | Amar | M | Kent Junior Congresses | 1383 | 1460 | 1416 | 309402K | ME020829 | 471976 | |
| Adeniyi | Nathan | | Highgate School | | | | | | | |
| Aderuga | Toby | | St Johns Senior School | | | | | | | |
| Adeweyu | Tonoe | | Nottingham HS | | | | | | | |
| Adhiban | B | | India | 2718 | | 2718 | 297148D | | 5018471 | |
| Afolabi | Dami | | St Johns Senior School | | | | | | | |
| Agarwal | Aditi | F | Kent Junior Congresses | 1578 | 1435 | 1578 | 314932J | | 479233 | |
| Agarwal | Aditi | F | Kent Junior Congresses | 1578 | 1435 | 1578 | 314932J | | 479233 | |
| Aggarwal | Romi | | Q Elizabeth H | 1458 | 1083 | 1458 | 309462F | | 0 | |
| Agnihotri | Aaryan | M | Barnet Knights | 1495 | 1495 | 1495 | 300583F | | 466166 | |
| Agnihotri | Akaash | M | Barnet Knights | 1495 | 1578 | 1495 | 300584H | | 466174 | |
| Agrawal | Shivam | M | Kings College Junior School (Wimbledon) | 1976 | 1876 | 1976 | 306605J | ME014479 | 460460 | |
| Agrawal | Ansh | M | King Edwards School Birmingham | 1458 | 1653 | 1458 | 309585L | | 473634 | |
| Ahad | Monaf | M | Scotland | | 933 | | 318485H | | 0 | |
| Ahi | Josya | | Tormead Girls School | | | | | | | |
| Ahluwalia | Amardip | M | RGS Guildford | 2238 | 2125 | 2238 | 287750J | ME000967 | 437085 | |
| Ahmed | Bilal | M | Q Elizabeth H | 1728 | 1683 | 1728 | 318794K | ME017444 | 0 | |
| Ainkaran | Lavanan | M | King Edward VI School Chelmsford | 1675 | 1698 | 1675 | 297350K | | 457116 | |
| Ainsworth | William J | M | Reigate GS | 1339 | 1158 | 1339 | 306943G | | 455474 | |
| Akash Pc | Iyer | M | India | 2538 | | 2538 | 314526J | | 5006775 | |
| Akella | Aditya | M | Wilsons School | | 1278 | | 320929F | ME020504 | 481718 | |
| Akeya-Price | Robert A | M | Trinity School | 2056 | 1998 | 2056 | 287093K | | 430510 | |
| Akshat | Khamparia | M | India | 2425 | | 2425 | 322539C | | 5016541 | |
| Aktselis | Filippos | M | Kent Junior Congresses | | 1128 | | 319394K | | 474975 | |
| Aktselis | Filippos | M | Kent Junior Congresses | | 1128 | | 319394K | | 474975 | |
| Al-Naimi | Yousif | M | Kings College School (Wimbledon) | | 1135 | | 301753K | | 0 | |
| Al-Robaie | Karam | M | Skinners School | 1218 | 1443 | 1218 | 304682F | | 0 | |
| Aldridge | Julian | M | Winchester College | | | | | | | |
| Alexander | Sonny | | Yateley Manor School | | | | | | | |
| Alexander | Sonny | | Yateley Manor School | | | | | | | |
| Alexandre-Epivent | Virgile | M | Kings College Junior School (Wimbledon) | 1158 | 1503 | 1158 | 311569A | | 0 | |
| Alford | Sam | | RGS Guildford | | 1540 | | 322355D | | 0 | |
| Alfred | Daren | M | Wilsons School | 1375 | | 1375 | 288259A | | 0 | |
| Ali | Shahvez | M | Kings College Junior School (Wimbledon) | 1773 | 1728 | 1773 | 302390E | ME014400 | 453790 | |
| Ali | Hassan | M | Reigate GS | 1315 | 970 | 1315 | 304169E | | 0 | |
| Ali | Adam | M | Wilsons School | | 1519 | | 305362D | ME022827 | 0 | |
| Ali | Shahyan | M | Kings College Junior School (Wimbledon) | 1278 | 1390 | 1278 | 312325L | ME014401 | 459402 | |
| Ali Hussain | Iskander | M | London | 74L | 66L | 1413 | 311625G | | 0 | |
| Alker | Steven | | Horsham | 1278 | 1195 | 1278 | 300286L | | 0 | |
| Alkhusheh | Alhumam | M | Reigate GS | 1300 | 1233 | 1300 | 293957F | | 0 | |
