Isthmian League 1998-99 Division 1
| Pos | Team | P | W | D | L | F | A | W | D | L | F | A | W | D | L | F | A | Dif | Pts |
| 1 | Canvey Island | 42 | 28 | 6 | 8 | 76 | 41 | 17 | 1 | 3 | 45 | 17 | 11 | 5 | 5 | 31 | 24 | 35 | 90 |
| 2 | Hitchin Town | 42 | 25 | 10 | 7 | 75 | 38 | 16 | 4 | 1 | 45 | 14 | 9 | 6 | 6 | 30 | 24 | 37 | 85 |
| 3 | Wealdstone | 42 | 26 | 6 | 10 | 75 | 48 | 14 | 4 | 3 | 43 | 22 | 12 | 2 | 7 | 32 | 26 | 27 | 84 |
| 4 | Braintree Town | 42 | 20 | 10 | 12 | 74 | 48 | 9 | 5 | 7 | 41 | 25 | 11 | 5 | 5 | 33 | 23 | 26 | 70 |
| 5 | Bognor Regis Town | 42 | 20 | 8 | 14 | 63 | 44 | 11 | 3 | 7 | 37 | 19 | 9 | 5 | 7 | 26 | 25 | 19 | 68 |
| 6 | Grays Athletic | 42 | 19 | 11 | 12 | 56 | 42 | 12 | 3 | 6 | 32 | 17 | 7 | 8 | 6 | 24 | 25 | 14 | 68 |
| 7 | Oxford City | 42 | 16 | 14 | 12 | 58 | 51 | 9 | 7 | 5 | 35 | 27 | 7 | 7 | 7 | 23 | 24 | 7 | 62 |
| 8 | Croydon | 42 | 16 | 13 | 13 | 53 | 53 | 10 | 5 | 6 | 30 | 25 | 6 | 8 | 7 | 23 | 28 | 0 | 61 |
| 9 | Chertsey Town | 42 | 14 | 16 | 12 | 57 | 57 | 7 | 8 | 6 | 27 | 29 | 7 | 8 | 6 | 30 | 28 | 0 | 58 |
| 10 | Romford | 42 | 14 | 15 | 13 | 58 | 63 | 7 | 6 | 8 | 28 | 33 | 7 | 9 | 5 | 30 | 30 | -5 | 57 |
| 11 | Maidenhead United | 42 | 13 | 15 | 14 | 50 | 46 | 3 | 7 | 11 | 13 | 28 | 10 | 8 | 3 | 37 | 18 | 4 | 54 |
| 12 | Worthing | 42 | 13 | 13 | 16 | 47 | 61 | 5 | 8 | 8 | 24 | 26 | 8 | 5 | 8 | 23 | 35 | -14 | 52 |
| 13 | Leyton Pennant | 42 | 13 | 12 | 17 | 62 | 70 | 6 | 7 | 8 | 30 | 32 | 7 | 5 | 9 | 32 | 38 | -8 | 51 |
| 14 | Uxbridge | 42 | 13 | 11 | 18 | 54 | 51 | 5 | 7 | 9 | 29 | 27 | 8 | 4 | 9 | 25 | 24 | 3 | 50 |
| 15 | Barton Rovers | 42 | 11 | 15 | 16 | 43 | 49 | 6 | 8 | 7 | 15 | 18 | 5 | 7 | 9 | 28 | 31 | -6 | 48 |
| 16 | Yeading | 42 | 12 | 10 | 20 | 51 | 55 | 6 | 6 | 9 | 27 | 23 | 6 | 4 | 11 | 24 | 32 | -4 | 46 |
| 17 | Leatherhead | 42 | 12 | 9 | 21 | 48 | 59 | 10 | 4 | 7 | 35 | 23 | 2 | 5 | 14 | 13 | 36 | -11 | 45 |
| 18 | Whyteleafe | 42 | 13 | 6 | 23 | 51 | 72 | 9 | 3 | 9 | 34 | 34 | 4 | 3 | 14 | 17 | 38 | -21 | 45 |
| 19 | Staines Town | 42 | 10 | 15 | 17 | 33 | 56 | 6 | 10 | 5 | 18 | 19 | 4 | 5 | 12 | 15 | 37 | -23 | 45 |
| 20 | Molesey | 42 | 8 | 20 | 14 | 35 | 52 | 3 | 11 | 7 | 12 | 30 | 5 | 9 | 7 | 23 | 22 | -17 | 44 |
| 21 | Wembley | 42 | 10 | 10 | 22 | 36 | 71 | 6 | 4 | 11 | 20 | 32 | 4 | 6 | 11 | 16 | 39 | -35 | 40 |
| 22 | Berkhamsted Town | 42 | 10 | 7 | 25 | 53 | 81 | 6 | 5 | 10 | 31 | 37 | 4 | 2 | 15 | 22 | 44 | -28 | 37 |