An exciting opportunity has arisen for an experienced Interim Employee Relations Manager to join our client for a period of 6 months to lead and shape a proactive, high-quality ER service within a complex, unionised environment. This role is central to ensuring the organisation maintains positive industrial relations, manages risk effectively, and supports a culture of fairness, inclusion, and accountability. You will be responsible for delivering expert advice on a wide range of employee relations matters, from individual casework through to large-scale organisational change. Working closely with senior leaders, HR colleagues, and trade union representatives, you will play a pivotal role in influencing outcomes and maintaining strong relationships across the organisation. This role requires 3 days a week onsite in central London, with 2 days working from home. Key responsibilities: Lead on complex employee relations cases, including disciplinary, grievance, capability, and investigationsProvide expert, pragmatic advice to senior stakeholders on employment law, policy, and best practiceDevelop and maintain constructive relationships with recognised trade unions, leading consultation and negotiation processesSupport organisational change programmes, including restructures and TUPE where appropriateIdentify trends and risks within ER activity and drive continuous improvement initiativesCoach and upskill HR colleagues and line managers to build confidence and capability in ..... full job details .....