Are you an experienced HR professional with strong Employee Relations expertise and a passion for driving organisational effectiveness? We are looking for a dynamic HR Business Partner to support a Senior HR Business Partner in delivering the people strategy across a complex, highly unionised environment.This role plays a key part in shaping people plans, supporting organisational change, and acting as a trusted advisor to senior leaders.Location: London, SE1Contract: Full time - temp 3 months InitiallySalary: £364.70 PAYE / £498 Umbrella per dayHybrid: 50% hybrid - expected to be 80% office based the first few weeksBusiness: Transport for LondonInterview: Via MS TeamsAbout the RoleAs an HR Business Partner, you will work closely with the Senior HRBP and senior leadership teams to deliver strategic people initiatives across designated business units. You will provide insight, challenge thinking, and recommend interventions that strengthen organisational performance.You will also support day-to-day employee relations activity, including consultation, negotiation, dispute resolution, and building constructive relationships with Trade Unions.This is a fantastic opportunity for an HR professional who thrives in a fast-paced, collaborative environment and enjoys influencing at a senior level.Key ResponsibilitiesPartner with senior leaders to deliver the people plan and HR BAU priorities.Build strong, credible relationships with senior managers and act as a trusted coach and adviso