| 01 | Native or highly fluent, trained early-childhood teachers | 41.0 |
| 02 | NovaKid | 32.4 |
| 03 | Small classes | 31.5 |
| 04 | 4–8 students | 31.5 |
| 05 | Oasis Academy Hobmoor | 30.0 |
| 06 | Cambly Kids | 29.7 |
| 07 | British Council (Young Learners) | 29.0 |
| 08 | Play-, story-, music-, and conversation-based teaching | 27.8 |
| 09 | Clear placement assessment | 25.6 |
| 10 | Progress reports | 25.6 |
| 11 | Safe facilities | 24.1 |
| 12 | Background-checked staff | 24.1 |
| 13 | Strong parent reviews | 24.1 |
| 14 | Montgomery Primary Academy | 23.1 |
| 15 | Flexible cancellation policies | 23.1 |
| 16 | Trial classes | 23.1 |
| 17 | Helen Doron English | 22.3 |
| 18 | Evelyn Street Primary Academy and Nursery | 20.3 |
| 19 | EF (Education First) Kids & Teens | 19.6 |
| 20 | London South East Academies Trust | 18.7 |
| 21 | Berlitz Kids & Teens | 18.1 |
| 22 | Belmont Academy | 17.7 |
| 23 | Ofsted reports | 16.9 |
| 24 | LingoAce | 16.3 |
| 25 | Snobe | 16.3 |
| 26 | Preply | 15.8 |
| 27 | VIPKid | 15.7 |
| 28 | Duolingo | 15.0 |
| 29 | I Can Read | 14.8 |
| 30 | British Council: Learn English Kids | 14.7 |