| 1 | Sat 15 Sep 2018 | 120-1 v Gosport BoroughHarrow Borough 0-1 Gosport Borough | Evo-Stik Southern Premier South |
| 2 | Sat 6 Oct 2018 | 82-2 v Hartley WintneyHarrow Borough 2-2 Hartley Wintney | Evo-Stik Southern Premier South |
| 3 | Sat 20 Oct 2018 | 124-1 v Dorchester TownHarrow Borough 4-1 Dorchester Town | Evo-Stik Southern Premier South |
| 4 | Tue 13 Nov 2018 | 105-2 v Tooting & Mitcham UnitedTooting & Mitcham United 2-5 Harrow Borough | London County Cup Second Round |
| 5 | Tue 20 Nov 2018 | 102-1 v Basingstoke TownHarrow Borough 2-1 Basingstoke Town | Evo-Stik Southern Premier South |
| 6 | Sat 1 Dec 2018 | 75-0 v FarnboroughHarrow Borough 5-0 Farnborough | Evo-Stik Southern Premier South |
| 7 | Sat 8 Dec 2018 | 70-7 v Taunton TownTaunton Town 7-0 Harrow Borough | Evo-Stik Southern Premier South |
| 8 | Sat 15 Dec 2018 | 73-0 v Merthyr TownHarrow Borough 3-0 Merthyr Town | Evo-Stik Southern Premier South |
| 9 | Tue 18 Dec 2018 | 72-1 v Beaconsfield TownHarrow Borough 2-1 Beaconsfield Town | Evo-Stik Southern Premier South |
| 10 | Sat 22 Dec 2018 | 72-2 v WeymouthWeymouth 2-2 Harrow Borough | Evo-Stik Southern Premier South |
| 11 | Wed 26 Dec 2018 | 73-1 v HendonHarrow Borough 3-1 Hendon | Evo-Stik Southern Premier South |
| 12 | Sat 29 Dec 2018 | 73-4 v Kings LangleyHarrow Borough 3-4 Kings Langley | Evo-Stik Southern Premier South |
| 13 | Tue 1 Jan 2019 | 75-1 v Staines TownStaines Town 1-5 Harrow Borough | Evo-Stik Southern Premier South |
| 14 | Sat 5 Jan 2019 | 74-3 v Metropolitan PoliceHarrow Borough 4-3 Metropolitan Police | Evo-Stik Southern Premier South |
| 15 | Tue 8 Jan 2019 | 70-1 v Metropolitan PoliceMetropolitan Police 1-0 Harrow Borough | Evo-Stik Southern Premier South |
| 16 | Sat 12 Jan 2019 | 71-4 v Beaconsfield TownBeaconsfield Town 4-1 Harrow Borough | Evo-Stik Southern Premier South |
| 17 | Sat 19 Jan 2019 | 71-3 v Swindon SupermarineHarrow Borough 1-3 Swindon Supermarine | Evo-Stik Southern Premier South |
| 18 | Tue 22 Jan 2019 | 123-3 v Poole TownPoole Town 3-3 Harrow Borough | Evo-Stik Southern Premier South |
| 19 | Sat 26 Jan 2019 | 72-2 v Basingstoke TownBasingstoke Town 2-2 Harrow Borough | Evo-Stik Southern Premier South |
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