| 1 | 28/7/2018 | 21-2 v Felixstowe & Walton UnitedFelixstowe & Walton United 2-1 Leiston | Friendly |
| 2 | 14/8/2018 | 25-2 v Royston TownRoyston Town 2-5 Leiston | Evo-Stik Southern Premier Central |
| 3 | 18/8/2018 | 20-1 v Banbury UnitedBanbury United 1-0 Leiston | Evo-Stik Southern Premier Central |
| 4 | 25/8/2018 | 6 2-2 v TamworthLeiston 2-2 Tamworth | Evo-Stik Southern Premier Central |
| 5 | 1/9/2018 | 54-3 v Redditch UnitedLeiston 4-3 Redditch United | Evo-Stik Southern Premier Central |
| 6 | 13/10/2018 | 44-0 v Halesowen TownLeiston 4-0 Halesowen Town | Evo-Stik Southern Premier Central |
| 7 | 16/10/2018 | 4 1-5 v King's Lynn TownLeiston 1-5 King's Lynn Town | Evo-Stik Southern Premier Central |
| 8 | 20/10/2018 | 42-3 v Stratford TownStratford Town 3-2 Leiston | Evo-Stik Southern Premier Central |
| 9 | 27/10/2018 | 63-1 v VCD AthleticVCD Athletic 1-3 Leiston | Buildbase FA Trophy First Qualifying Round |
| 10 | 3/11/2018 | 63-0 v Biggleswade TownLeiston 3-0 Biggleswade Town | Evo-Stik Southern Premier Central |
| 11 | 6/11/2018 | 60-1 v Lowestoft TownLeiston 0-1 Lowestoft Town | CSS League Challenge Cup Second Round |
| 12 | 17/11/2018 | 160-1 v Rushall OlympicLeiston 0-1 Rushall Olympic | Evo-Stik Southern Premier Central |
| 13 | 21/11/2018 | 22-2 v Hitchin TownHitchin Town 2-2 Leiston | Evo-Stik Southern Premier Central |
| 14 | 24/11/2018 | 61-3 v Beaconsfield TownBeaconsfield Town 3-1 Leiston | Buildbase FA Trophy Third Qualifying Round |
| 15 | 1/12/2018 | 17 1-4 v AFC Rushden & DiamondsLeiston 1-4 AFC Rushden & Diamonds | Evo-Stik Southern Premier Central |
| 16 | 8/12/2018 | 60-3 v StourbridgeLeiston 0-3 Stourbridge | Evo-Stik Southern Premier Central |
| 17 | 15/12/2018 | 52-2 v Bedworth UnitedBedworth United 2-2 Leiston | Evo-Stik Southern Premier Central |
| 18 | 22/12/2018 | 5 2-2 v Coalville TownCoalville Town 2-2 Leiston | Evo-Stik Southern Premier Central |
| 19 | 26/12/2018 | 152-1 v Needham MarketLeiston 2-1 Needham Market | Evo-Stik Southern Premier Central |
| 20 | 29/12/2018 | 151-1 v Royston TownLeiston 1-1 Royston Town | Evo-Stik Southern Premier Central |
| 21 | 5/1/2019 | 51-1 v King's Lynn TownKing's Lynn Town 1-1 Leiston | Evo-Stik Southern Premier Central |
| 22 | 8/1/2019 | 50-2 v St Neots TownSt Neots Town 2-0 Leiston | Evo-Stik Southern Premier Central |
| 23 | 12/1/2019 | 2 2-0 v St Neots TownLeiston 2-0 St Neots Town | Evo-Stik Southern Premier Central |
| 24 | 5/3/2019 | 142-1 v Biggleswade TownBiggleswade Town 1-2 Leiston | Evo-Stik Southern Premier Central |
| 25 | 9/3/2019 | 51-1 v Bedworth UnitedLeiston 1-1 Bedworth United | Evo-Stik Southern Premier Central |
| 26 | 16/3/2019 | 60-2 v St Ives TownLeiston 0-2 St Ives Town | Evo-Stik Southern Premier Central |
| 27 | 19/3/2019 | 61-2 v Stratford TownLeiston 1-2 Stratford Town | Evo-Stik Southern Premier Central |
| 28 | 23/3/2019 | 40-0 v Halesowen TownHalesowen Town 0-0 Leiston | Evo-Stik Southern Premier Central |
| 29 | 30/3/2019 | 2 0-1 v Kettering TownLeiston 0-1 Kettering Town | Evo-Stik Southern Premier Central |
| 30 | 2/4/2019 | 61-2 v AlvechurchAlvechurch 2-1 Leiston | Evo-Stik Southern Premier Central |
| 31 | 13/4/2019 | 20-0 v Banbury UnitedLeiston 0-0 Banbury United | Evo-Stik Southern Premier Central |
| 32 | 20/4/2019 | 20-5 v TamworthTamworth 5-0 Leiston | Evo-Stik Southern Premier Central |
| 33 | 22/4/2019 | 6 0-4 v Lowestoft TownLeiston 0-4 Lowestoft Town | Evo-Stik Southern Premier Central |
| 34 | 27/4/2019 | 61-3 v Redditch UnitedRedditch United 3-1 Leiston | Evo-Stik Southern Premier Central |
| 35 | 8/5/2019 | 123-2 v Felixstowe & Walton UnitedFelixstowe & Walton United 2-3 Leiston | Suffolk County Cup Final |
