81014 1B07 1718 Euston – Northampton 11vb 130386
| Milepost/Station | Sched arr/dep | Actual arr/dep | Passing time | variance | Av speed |
| 0 – London Euston | 1718 dep | 1717.58 | +1 | 25 | |
| 1 | 1720.22 | 64.28 | |||
| 3.5 | 1722.42 | 50 | |||
| 4 | 1723.28 | 83.72 | |||
| 5 – Willesden | 1724 pass | 1724.11 | — | 87.8 | |
| 6 | 1724.52 | 75 | |||
| 7 | 1725.40 | 94.7 | |||
| 9 | 1726.48 | 76.5 | |||
| 10 | 1727.33 | 96.4 | |||
| 13 | 1729.15 | 87.8 | |||
| 14 | 1729.56 | 81.8 | |||
| 17 – Watford Jn | 1732 pass | 1731.48 | — | 97.2 | |
| 18 | 1732.25 | 98.6 | |||
| 20 | 1733.38 | 97.2 | |||
| 21 | 1734.15 | 100 | |||
| 22 | 1734.51 | 100 | |||
| 23 | 1735.27 | 98.6 | |||
| 25 | 1736.40 | 97.2 | |||
| 26 | 1737.15 | 94.7 | |||
| 27 | 1737.55 | 94.7 | |||
| 28 – Berkhampsted | 1738.33 | 98.6 | |||
| 30 | 1739.49 | 94.7 | |||
| 31 – Tring | 1741 pass | 1740.27 | -0.5 | 98.6 | |
| 33 | 1741.40 | 100 | |||
| 34 | 1742.16 | 97.2 | |||
| 35 | 1742.53 | 94.7 | |||
| 36 | 1743.31 | 94.7 | |||
| 37 | 1744.09 | 90 | |||
| 38 | 1744.49 | 75 | |||
| 39 | 1745.37 | 41.3 | |||
| 40 | 1746.54 | 23 | |||
| 40.25 Leighton Buzzard | 1748 arr | 1747.35 arr | — | —- |