Employment tribunal – Procedure. The employment tribunal refused the employee permission to amend his claim of detrimental treatment due to trade union activities to include a claim of victimisation because, inter alia, the employee had been unable to provide a legal basis for the claim. The Employment Appeal Tribunal held, inter alia, that there was a clear legal basis for the amendment and the tribunal's refusal had been vitiated by error of law. Accordingly, the employee's appeal would be allowed and permission to amend would be granted.