| 1 | Sat 11 Aug 2018 | 3 2-0 v Coalville TownLeiston 2-0 Coalville Town |
| 2 | Tue 14 Aug 2018 | 35-2 v Royston TownRoyston Town 2-5 Leiston |
| 3 | Sat 18 Aug 2018 | 30-1 v Banbury UnitedBanbury United 1-0 Leiston |
| 4 | Sat 25 Aug 2018 | 32-2 v TamworthLeiston 2-2 Tamworth |
| 5 | Mon 27 Aug 2018 | 32-2 v Needham MarketNeedham Market 2-2 Leiston |
| 6 | Sat 29 Sep 2018 | 30-1 v BarwellLeiston 0-1 Barwell |
| 7 | Sat 13 Oct 2018 | 3 4-0 v Halesowen TownLeiston 4-0 Halesowen Town |
| 8 | Tue 16 Oct 2018 | 31-5 v King's Lynn TownLeiston 1-5 King's Lynn Town |
| 9 | Sat 20 Oct 2018 | 32-3 v Stratford TownStratford Town 3-2 Leiston |
| 10 | Sat 17 Nov 2018 | 30-1 v Rushall OlympicLeiston 0-1 Rushall Olympic |
| 11 | Wed 21 Nov 2018 | 32-2 v Hitchin TownHitchin Town 2-2 Leiston |
| 12 | Sat 1 Dec 2018 | 31-4 v AFC Rushden & DiamondsLeiston 1-4 AFC Rushden & Diamonds |
| 13 | Sat 8 Dec 2018 | 3 0-3 v StourbridgeLeiston 0-3 Stourbridge |
| 14 | Sat 15 Dec 2018 | 32-2 v Bedworth UnitedBedworth United 2-2 Leiston |
| 15 | Sat 22 Dec 2018 | 32-2 v Coalville TownCoalville Town 2-2 Leiston |
| 16 | Wed 26 Dec 2018 | 3 2-1 v Needham MarketLeiston 2-1 Needham Market |
| 17 | Sat 29 Dec 2018 | 3 1-1 v Royston TownLeiston 1-1 Royston Town |
| 18 | Tue 1 Jan 2019 | 32-1 v Lowestoft TownLowestoft Town 1-2 Leiston |
| 19 | Sat 5 Jan 2019 | 3 1-1 v King's Lynn TownKing's Lynn Town 1-1 Leiston |
| 20 | Tue 8 Jan 2019 | 30-2 v St Neots TownSt Neots Town 2-0 Leiston |
| 21 | Sat 12 Jan 2019 | 32-0 v St Neots TownLeiston 2-0 St Neots Town |
| 22 | Sat 19 Jan 2019 | 30-2 v Rushall OlympicRushall Olympic 2-0 Leiston |
| 23 | Sat 26 Jan 2019 | 3 1-2 v Hitchin TownLeiston 1-2 Hitchin Town |
| 24 | Sat 2 Mar 2019 | 30-4 v StourbridgeStourbridge 4-0 Leiston |
| 25 | Tue 5 Mar 2019 | 3 2-1 v Biggleswade TownBiggleswade Town 1-2 Leiston |
| 26 | Sat 9 Mar 2019 | 31-1 v Bedworth UnitedLeiston 1-1 Bedworth United |
| 27 | Sat 16 Mar 2019 | 30-2 v St Ives TownLeiston 0-2 St Ives Town |
| 28 | Tue 19 Mar 2019 | 31-2 v Stratford TownLeiston 1-2 Stratford Town |
| 29 | Sat 23 Mar 2019 | 30-0 v Halesowen TownHalesowen Town 0-0 Leiston |
| 30 | Sat 30 Mar 2019 | 30-1 v Kettering TownLeiston 0-1 Kettering Town |
| 31 | Tue 2 Apr 2019 | 31-2 v AlvechurchAlvechurch 2-1 Leiston |
| 32 | Sat 6 Apr 2019 | 3 0-3 v BarwellBarwell 3-0 Leiston |
| 33 | Sat 13 Apr 2019 | 30-0 v Banbury UnitedLeiston 0-0 Banbury United |
| 34 | Sat 20 Apr 2019 | 30-5 v TamworthTamworth 5-0 Leiston |
| 35 | Mon 22 Apr 2019 | 30-4 v Lowestoft TownLeiston 0-4 Lowestoft Town |
| 36 | Sat 27 Apr 2019 | 31-3 v Redditch UnitedRedditch United 3-1 Leiston |
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