Every award of long term compensation may be reviewed by the Agency at the instance either of the claimant or of the Agency, and may in consequence of such review be increased or decreased.

Subject as hereinafter provided, review under this Regulation shall not take place at intervals of less than six months or, save in exceptional circumstances, later than two years from the making of the award.

Notwithstanding the provisions of paragraph (2) of this Regulation, any such award as aforesaid shall be subject to review at any time if the claimant is in the service of the Agency or any subsidiary of the Agency.

Where a request for a review is made by the claimant, the Agency shall carry out such review and notify the claimant accordingly not later than thirteen weeks after the receipt of the request.