Pension – Pension scheme. The decision to implement an extension of the provision of full indexation of the guaranteed minimum pension payable to all members of public service pension schemes who reached state pension age between December 2018 and April 2021 had not been arbitrary, disproportionate, irrational or inadequately reasoned. The Divisional Court, in dismissing BT's application for judicial review, further rejected its contention that the option of amending the rules of the principal civil service pension scheme would not interfere with specified members' property rights.