Claim for damages
There is no right in judicial review to claim damages for losses caused by unlawful administrative actions. It is only possible to receive damages in judicial review claims if there is another established cause of action, separate to the ground for judicial review, such as breach of statutory duty, misfeasance in public office or a private action in tort.
For example, if a decision-maker takes into account an irrelevant consideration, this will likely provide grounds for quashing the decision on the basis of illegality, but it may also create a right to damages for misfeasance in public office if it can be proved that the action complained of was done knowingly or maliciously. Where a separate cause of action accrues, the claim for judicial review may include a claim for damages to avoid the need to bring parallel proceedings.
Even though damages are not available, there may be other financial gain to be had from bringing a judicial review claim. The publicity associated with a judicial review claim will often encourage a public body to retract a decision or settle the dispute.