| 1 | Sat 2 Dec 2017 | 33-0 v Metropolitan PoliceHarrow Borough 3-0 Metropolitan Police | Bostik League Premier Division |
| 2 | Sat 9 Dec 2017 | 33-1 v Folkestone InvictaFolkestone Invicta 1-3 Harrow Borough | Bostik League Premier Division |
| 3 | Sat 16 Dec 2017 | 30-5 v LeistonHarrow Borough 0-5 Leiston | Bostik League Premier Division |
| 4 | Sat 23 Dec 2017 | 31-2 v Tonbridge AngelsTonbridge Angels 2-1 Harrow Borough | Bostik League Premier Division |
| 5 | Tue 26 Dec 2017 | 30-4 v HendonHarrow Borough 0-4 Hendon | Bostik League Premier Division |
| 6 | Sat 30 Dec 2017 | 31-2 v LeatherheadHarrow Borough 1-2 Leatherhead | Bostik League Premier Division |
| 7 | Sat 6 Jan 2018 | 33-2 v Needham MarketHarrow Borough 3-2 Needham Market | Bostik League Premier Division |
| 8 | Sat 10 Feb 2018 | 32-0 v ThurrockHarrow Borough 2-0 Thurrock | Bostik League Premier Division |
| 9 | Sat 17 Feb 2018 | 30-1 v Metropolitan PoliceMetropolitan Police 1-0 Harrow Borough | Bostik League Premier Division |
| 10 | Sat 24 Feb 2018 | 31-0 v WorthingHarrow Borough 1-0 Worthing | Bostik League Premier Division |
| 11 | Sat 10 Mar 2018 | 30-3 v Folkestone InvictaHarrow Borough 0-3 Folkestone Invicta | Bostik League Premier Division |
| 12 | Sat 24 Mar 2018 | 3 1-0 v KingstonianKingstonian 0-1 Harrow Borough | Bostik League Premier Division |
| 13 | Sat 31 Mar 2018 | 31-0 v MersthamMerstham 0-1 Harrow Borough | Bostik League Premier Division |
| 14 | Mon 2 Apr 2018 | 35-0 v Enfield TownHarrow Borough 5-0 Enfield Town | Bostik League Premier Division |
| 15 | Sat 7 Apr 2018 | 31-1 v Brightlingsea RegentBrightlingsea Regent 1-1 Harrow Borough | Bostik League Premier Division |
| 16 | Tue 10 Apr 2018 | 30-3 v LeistonLeiston 3-0 Harrow Borough | Bostik League Premier Division |
| 17 | Thu 12 Apr 2018 | 36-0 v Lowestoft TownHarrow Borough 6-0 Lowestoft Town | Bostik League Premier Division |
| 18 | Sat 14 Apr 2018 | 31-1 v Tooting & Mitcham UnitedHarrow Borough 1-1 Tooting & Mitcham United | Bostik League Premier Division |
| 19 | Sat 21 Apr 2018 | 31-0 v Needham MarketNeedham Market 0-1 Harrow Borough | Bostik League Premier Division |
| 20 | Tue 24 Apr 2018 | 144-0 v Dorking WanderersDorking Wanderers 0-4 Harrow Borough | Bostik League Premier Division |
| 21 | Sat 28 Apr 2018 | 33-2 v Burgess Hill TownHarrow Borough 3-2 Burgess Hill Town | Bostik League Premier Division |
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