POLICE SUPERANNUATION — Claim under s 10(1A)(b) or (c) of Police Regulation (Superannuation) Act 1906 — Defendant awarded an increase of pension commencing on date it received application for the benefit, 4 February 2014 — Plaintiff sought backdating to the date of commencement of his pension entitlement, 6 September 2003 — Section 10(1BA) only applies to a pension granted on or after that date and was inapplicable to the plaintiff’s entitlement — Section 10(1A) applied — Meaning of “appropriate” — Principles of construction of the Act — Review of earlier authorities — Consideration of delay — Plaintiff failed to seek backdating when he applied to the defendant — Plaintiff not aggrieved by any decision of the defendant since he had not sought backdating of the benefit