Subject to the provisions of this Regulation, long term compensation shall commence to be payable with effect from the date fixed by the Agency or the tribunal, as the case may be.

An award of such compensation may be made retrospective but, except as provided in paragraph (3) of this Regulation, it shall not (save in exceptional circumstances) be made retrospective to a date more than thirteen weeks earlier than the date upon which the claim is received by the Agency.

Where, within thirteen weeks of the occurrence of a loss or diminution for which a claim for long term compensation can be made, the claimant makes his claim in respect thereof in accordance with Part IV of these Regulations, the award shall be made retrospective to the date upon which such loss or diminution occurred or the claimant's resettlement period (if any) ended, whichever is later.

Notwithstanding any other provisions of these Regulations, long term compensation for loss or diminution of emoluments shall not be payable to a claimant during or in respect of his resettlement period, except in so far as such compensation is compensation for loss or diminution of emoluments occurring before the termination of the claimant's employment as an officer or servant of the employing company.