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These dates may be subject to review, but it is anticipated that completion will be required on the third Monday of September each year.
| Year of completion | Deadline |
| 2025 | 5pm on Monday 15 September 2025 |
| 2026 | 5pm on Monday 21 September 2026 |
| 2027 | 5pm on Monday 20 September 2027 |
| 2028 | 5pm on Monday 18 September 2028 |