Isthmian League Tables
1978/79 Tables◄ 1979/80 Tables ►1980/81 Tables
Isthmian League Premier Division 1979/80
| Pos | Club | Pld | W | D | L | F | A | GD | Pts | Notes |
| 1st | Enfield | 42 | 25 | 9 | 8 | 74 | 32 | +42 | 84 | Champions |
| 2nd | Walthamstow Avenue | 42 | 24 | 9 | 9 | 87 | 48 | +39 | 81 | Runners Up |
| 3rd | Dulwich Hamlet | 42 | 21 | 16 | 5 | 66 | 37 | +29 | 79 | - |
| 4th | Sutton United | 42 | 20 | 13 | 9 | 67 | 40 | +27 | 73 | - |
| 5th | Dagenham | 42 | 20 | 13 | 9 | 82 | 56 | +26 | 73 | - |
| 6th | Tooting & Mitcham United | 42 | 21 | 6 | 15 | 62 | 59 | +3 | 69 | - |
| 7th | Barking | 42 | 19 | 10 | 13 | 72 | 51 | +21 | 67 | - |
| 8th | Harrow Borough | 42 | 17 | 15 | 10 | 64 | 51 | +13 | 66 | - |
| 9th | Woking | 42 | 17 | 13 | 12 | 78 | 59 | +19 | 64 | - |
| 10th | Wycombe Wanderers | 42 | 17 | 13 | 12 | 72 | 53 | +19 | 64 | - |
| 11th | Harlow Town | 42 | 14 | 12 | 16 | 54 | 60 | -6 | 54 | - |
| 12th | Hitchin Town | 42 | 13 | 15 | 14 | 54 | 68 | -14 | 54 | - |
| 13th | Hendon | 42 | 12 | 13 | 17 | 50 | 57 | -7 | 49 | - |
| 14th | Slough Town | 42 | 13 | 10 | 19 | 54 | 71 | -17 | 49 | - |
| 15th | Boreham Wood | 42 | 13 | 10 | 19 | 50 | 69 | -19 | 49 | - |
| 16th | Staines Town | 42 | 14 | 6 | 22 | 46 | 67 | -21 | 48 | - |
| 17th | Hayes | 42 | 12 | 9 | 21 | 48 | 68 | -20 | 45 | - |
| 18th | Leatherhead | 42 | 11 | 11 | 20 | 51 | 60 | -9 | 44 | - |
| 19th | Carshalton Athletic | 42 | 12 | 7 | 23 | 48 | 78 | -30 | 43 | - |
| 20th | Croydon | 42 | 10 | 10 | 22 | 51 | 59 | -8 | 40 | - |
| 21st | Oxford City | 42 | 10 | 9 | 23 | 49 | 87 | -38 | 39 | ▼Relegated |
| 22nd | Tilbury | 42 | 7 | 11 | 24 | 41 | 90 | -49 | 30* | ▼Relegated |
* Tilbury were Deducted 2 Points
Isthmian League Division 1 1979/80
| Pos | Club | Pld | W | D | L | F | A | GD | Pts | Notes |
| 1st | Leytonstone & Ilford | 42 | 31 | 6 | 5 | 83 | 35 | +48 | 99 | ▲Champions |
| 2nd | Bromley | 42 | 24 | 10 | 8 | 93 | 44 | +49 | 82 | ▲Runners Up |
| 3rd | Maidenhead United | 42 | 24 | 8 | 10 | 81 | 46 | +35 | 80 | - |
| 4th | Bishop's Stortford | 42 | 24 | 8 | 10 | 74 | 47 | +27 | 80 | - |
| 5th | Kingstonian | 42 | 22 | 8 | 12 | 59 | 44 | +15 | 74 | - |
| 6th | Chesham United | 42 | 18 | 13 | 11 | 68 | 56 | +12 | 67 | - |
| 7th | St Albans City | 42 | 17 | 13 | 12 | 65 | 47 | +18 | 64 | - |
| 8th | Farnborough Town | 42 | 19 | 7 | 16 | 70 | 57 | +13 | 64 | - |
| 9th | Epsom & Ewell | 42 | 18 | 7 | 17 | 62 | 57 | +5 | 61 | - |
| 10th | Camberley Town | 42 | 16 | 10 | 16 | 43 | 38 | +5 | 58 | - |
| 11th | Walton & Hersham | 42 | 15 | 12 | 15 | 61 | 50 | +11 | 57 | - |
| 12th | Wembley | 42 | 16 | 8 | 18 | 46 | 52 | -6 | 56 | - |
| 13th | Wokingham Town | 42 | 14 | 11 | 17 | 45 | 49 | -4 | 53 | - |
| 14th | Hertford Town | 42 | 13 | 11 | 18 | 71 | 74 | -3 | 50 | - |
| 15th | Aveley | 42 | 12 | 13 | 17 | 45 | 55 | -10 | 49 | - |
| 16th | Hampton | 42 | 14 | 7 | 21 | 57 | 74 | -17 | 49 | - |
| 17th | Finchley | 42 | 13 | 9 | 20 | 44 | 59 | -15 | 48 | - |
| 18th | Metropolitan Police | 42 | 13 | 8 | 21 | 46 | 67 | -21 | 47 | - |
| 19th | Ware | 42 | 11 | 12 | 19 | 41 | 57 | -16 | 45 | - |
| 20th | Clapton | 42 | 14 | 3 | 25 | 48 | 77 | -29 | 45 | - |
| 21st | Harwich & Parkeston | 42 | 11 | 6 | 25 | 51 | 84 | -33 | 38* | ▼Relegated |
| 22nd | Horsham | 42 | 6 | 4 | 32 | 29 | 113 | -84 | 22 | ▼Relegated |
* Harwich & Parkeston were Deducted 1 Point
Isthmian League Division 2 1979/80
| Pos | Club | Pld | W | D | L | F | A | GD | Pts | Notes |
| 1st | Billericay Town | 36 | 31 | 3 | 2 | 100 | 18 | +82 | 96 | ▲Champions |
| 2nd | Lewes | 36 | 24 | 7 | 5 | 82 | 33 | +49 | 79 | ▲Runners Up |
| 3rd | Hungerford Town | 36 | 21 | 8 | 7 | 77 | 35 | +42 | 71 | - |
| 4th | Eastbourne United | 36 | 21 | 6 | 9 | 77 | 45 | +32 | 69 | - |
| 5th | Letchworth Garden City | 36 | 21 | 6 | 9 | 63 | 32 | +31 | 69 | - |
| 6th | Hornchurch | 36 | 21 | 6 | 9 | 66 | 39 | +27 | 69 | - |
| 7th | Molesey | 36 | 15 | 9 | 12 | 67 | 60 | +7 | 54 | - |
| 8th | Barton Rovers | 36 | 15 | 7 | 14 | 49 | 49 | 0 | 52 | - |
| 9th | Worthing | 36 | 14 | 9 | 13 | 58 | 54 | +4 | 51 | - |
| 10th | Cheshunt | 36 | 13 | 7 | 16 | 47 | 52 | -5 | 46 | - |
| 11th | Rainham Town | 36 | 12 | 7 | 17 | 54 | 65 | -11 | 43 | - |
| 12th | Egham Town | 36 | 11 | 9 | 16 | 47 | 53 | -6 | 42 | - |
| 13th | Southall | 36 | 11 | 6 | 19 | 43 | 69 | -26 | 39 | - |
| 14th | Feltham | 36 | 8 | 11 | 17 | 23 | 49 | -26 | 35 | - |
| 15th | Tring Town | 36 | 7 | 13 | 16 | 38 | 55 | -17 | 34 | - |
| 16th | Epping Town | 36 | 10 | 4 | 22 | 44 | 69 | -25 | 34 | - |
| 17th | Willesden | 36 | 9 | 6 | 21 | 32 | 83 | -51 | 33 | - |
| 18th | Hemel Hempstead | 36 | 4 | 9 | 23 | 33 | 72 | -39 | 21 | - |
| 19th | Corinthian-Casuals | 36 | 6 | 3 | 27 | 24 | 92 | -68 | 21 | - |
Isthmian League - End of Season Notes--
|
Teams Joining the Isthmian League |
| ▲Dorking Town were Promoted from the Athenian League |
1978/79 Tables◄ 1979/80 Tables ►1980/81 Tables