Where an arbitrator, acting under the Arbitration Act 1966, has determined an open market rental value of a property following a disputed rent review, does the landlord require the permission of the court to ‘enforce an arbitration award’. The parties engaged in formal arbitration and a market value has been determined. The award was never challenged or appealed and is therefore binding. The landlord has therefore continued to demand rent at the new rental value. The tenant has fallen into arrears. Can the landlord simply issue a claim in the county court for those arrears, or does the landlord require permission to enforce the award of the arbitrator? The award was simply a declaration of the open market rental value—there was no award for payment of arrears, all of which accrued post-arbitration.