| Colour Coding |
| Promoted to Step Two |
| Playoff for Step Two |
| Stay in Step Three |
| Possible relegation to Step 4 |
| Relegated to Step Four |
| Isthmian Premier | |||||||||
| Pos | Team | P | W | D | L | F | A | GD | Pts |
| 1 | Braintree Town | 42 | 28 | 10 | 4 | 74 | 32 | 42 | 94 |
| 2 | Heybridge Swifts | 42 | 28 | 3 | 11 | 70 | 46 | 24 | 87 |
| 3 | Fisher Athletic (P) | 42 | 26 | 7 | 9 | 84 | 46 | 38 | 85 |
| 4 | AFC Wimbledon (P) | 42 | 22 | 11 | 9 | 67 | 36 | 31 | 77 |
| 5 | Hampton & Richmond | 42 | 24 | 3 | 15 | 73 | 54 | 19 | 75 |
| 6 | Staines Town | 42 | 20 | 10 | 12 | 74 | 56 | 18 | 70 |
| 7 | Billericay Town | 42 | 19 | 12 | 11 | 69 | 45 | 24 | 69 |
| 8 | Worthing | 42 | 19 | 10 | 13 | 71 | 60 | 11 | 67 |
| 9 | Walton & Hersham (P) | 42 | 19 | 7 | 16 | 55 | 50 | 5 | 64 |
| 10 | Chelmsford City | 42 | 18 | 10 | 14 | 57 | 62 | -5 | 64 |
| 11 | Bromley (P) | 42 | 16 | 14 | 12 | 57 | 49 | 8 | 62 |
| 12 | East Thurrock United (P) | 42 | 18 | 5 | 19 | 60 | 60 | 0 | 59 |
| 13 | Folkestone Invicta | 42 | 16 | 10 | 16 | 47 | 51 | -4 | 58 |
| 14 | Margate (R) | 42 | 11 | 17 | 14 | 49 | 55 | -6 | 50 |
| 15 | Leyton | 42 | 13 | 9 | 20 | 58 | 61 | -3 | 48 |
| 16 | Harrow Borough | 42 | 13 | 9 | 20 | 56 | 73 | -17 | 48 |
| 17 | Slough Town | 42 | 13 | 8 | 21 | 63 | 75 | -12 | 47 |
| 18 | Wealdstone | 42 | 13 | 5 | 24 | 68 | 82 | -14 | 44 |
| 19 | Hendon | 42 | 9 | 12 | 21 | 44 | 64 | -20 | 39 |
| 20 | Maldon Town (P) | 42 | 8 | 11 | 23 | 41 | 73 | -32 | 35 |
| 21 | Windsor & Eton | 42 | 8 | 8 | 26 | 37 | 75 | -38 | 32 |
| 22 | Redbridge (R) | 42 | 3 | 5 | 34 | 28 | 97 | -69 | 14 |