4 Head of HR jobs in Westminster, Greater London

Are you an experienced HR leader who is passionate about creating high-performing, inclusive workplaces where people can thrive?

I am working exclusively with St Giles Trust who are a UK charity that supports people facing poverty, exploitation, violence, homelessness, and involvement with the criminal justice system. Using staff with lived experience, they help individuals overcome challenges, build resilience, and create positive futures through tailored support, advice, training, and employment opportunities. Their mission is to ensure that everyone has the opportunity to succeed, regardless of their background or circumstances.

At St Giles Trust, people are at the heart of everything they do. They are looking for an exceptional Head of People Business Partnering to play a pivotal role in shaping our people agenda, partnering with senior leaders across the organisation to build an inclusive culture where colleagues feel supported, empowered and able to perform at their best.

This is an exciting 12 month fixed term opportunity to lead our People Business Partnering team and drive strategic people initiatives across a national organisation with a strong social purpose. Working closely with the Director of People and Culture, you will combine strategic thinking with hands-on leadership, helping their leaders navigate change, develop their teams and deliver excellent people outcomes across the employee lifecycle.

The Head of People Business Partnering role is a part-time position, 4-days per week (28 hours) paying £44,000 pro rata (£55,000 FTE). You will be able to work on a flexible hybrid basis with some national travel. The charity’s London office is located in Camberwell, South East London. The role manages a team of two direct reports and four indirect reports. Some of the key responsibilities include:

• Leading and developing the People Business Partnering team, ensuring a responsive, customer-focused service that supports colleagues throughout the employee lifecycle.
• Partnering with senior leaders to develop people strategies that align with organisational priorities, including workforce planning, organisational design and succession planning.
• Developing and embedding a strategic approach to recruitment and retention, helping St Giles Trust attract and retain talented people.
• Providing expert advice on complex employee relations matters, including discipline, grievance and organisational change.
• Supporting leaders through restructures, TUPE, redundancies and wider change programmes, ensuring a consistent and collaborative approach.
• Leading the governance of job evaluation processes and maintaining accurate job descriptions and people records.
• Working with colleagues across the wider People team to develop and deliver innovative people initiatives, policies and practices.
• Managing key contracts, budgets and external partnerships, including employment law support, occupational health and employee assistance services.
• Using data, external trends and best practice to continually improve our people services and support the delivery of our organisational strategy.

This is a fantastic opportunity for an experienced HR professional with a strong background in strategic business partnering and leading high-performing teams. You will have excellent knowledge of employment law, experience advising on complex employee relations cases, TUPE and be confident influencing senior stakeholders. Ideally, you will be CIPD qualified or have equivalent experience with evidence of continuous professional development.

As an organisation that works with children and adults at risk we are committed to safeguarding, protecting and promoting the safety of our clients and successful applicants will be DBS Checked.

The interview process will consist of two stages, with the aim to have someone in post by the 26th October 2026.

Apply now and help shape the future of an organisation with a great purpose and mission.

Application Deadline: 21 September 2026

Department: Business Services

Location: London/Brussels

Compensation: London £76,431 / year and Brussels €7,066 / month

Description

If you are a strategic HR leader who thrives in complex international environments, we would love to hear from you. We are looking for an exceptional Head of People & Culture to partner with senior leaders, lead a global People & Culture function, and help build an organisation capable of delivering lasting environmental impact. This is a unique opportunity to influence strategy, culture and organisational effectiveness at a critical leadership level.

If this opportunity excites you, we would encourage you to submit your application early and don't wait until the deadline. While the vacancy will remain open, we will begin reviewing candidates throughout the advertising period.

Important dates to note:

• Deadline to submit an initial application: 21st of September
• If your profile passes initial screening, you will be asked to submit additional information in the form of three additional questions.
• The deadline to submit your answers is the 24th of September
• If we do not receive a response to these questions by the deadline we will assume you are no longer interested in the role.
• Interviews will take place from the week beginning 28 September 2026

Please also review the "Our Hiring Process" section at the bottom of this advert to learn more about the stages involved for this specific role.

Key Responsibilities

• Act as a trusted adviser to the Global Leadership Team and, with the People Business Partners, other senior leaders, providing expert guidance on People-related organisational design implications, workforce planning, leadership effectiveness, and change.
• Provide functional leadership and coordination across the People team, ensuring high standards, alignment and delivery while retaining clear accountability for the overall effectiveness and performance of the global People function
• Lead any People-related organisational development initiatives to support growth, international expansion, and evolving organisational models
• Contribute to the development and leadership of ClientEarth’s EDI and Decolonisation strategy, ensuring alignment with global best practice and organisational values and measurable progress in systems, decision-making, and leadership practice

See the job description for a full list of duties for this role.

Skills, Knowledge & Expertise

• MCIPD-qualified HR professional, or equivalent senior-level experience in HR, organisational development, employee relations, or employment law (essential)
• Extensive experience leading or shaping a global People / HR function in a complex organisation and operating as a trusted adviser to senior leaders
• Experience working and negotiating with trade unions and other employee representative bodies
• Experience leading People-related organisational change projects in multi-country and matrixed organisations

See the job description for a full list of requirements for this role.

Job Benefits

Flexible working: We are proud to be a Flexa accredited Employer. Visit our Flexa Employer page for more information on our approach to flexible working. Our flexible working policy allows our people the choice to decide to work from home/another location in the country where their contract of employment is issued for 80% of their month, with the other 20% of their month being office-based. See our benefits page for more: Benefits | ClientEarth Careers as well as our flexible working FAQ.

ClientEarth values diversity and inclusion and the benefits this brings. We aim to appoint the most suitable candidate at all times and welcome applications from people from all different backgrounds. See our Equity, Diversity and Inclusion (EDI) at ClientEarth | ClientEarth journey page for more.

Please note that ClientEarth is only able to employ those who have the pre-existing legal right to work in Belgium or the UK.

ClientEarth is not a law firm and does not provide legal advice or legal services to third parties.

Head of People, Culture & Learning Women's EnvironmentalCharity

£50,798 pro rata | Initial 6-Month FTC | 35 hours per week | Hybrid, with remote working considered

Immediate start required. Please note that CVs will be reviewed and submitted on a rolling basis, therefore early applications are strongly encouraged.

Are you an experienced HR professional looking for an opportunity to combine your people expertise with meaningful, purpose-driven work?

Our client is a pioneering environmental charity working at the intersection of women, health, equity and environmental justice. Through an intersectional feminist approach, they support communities to take climate action, amplify underrepresented voices and drive systemic change.

This is a rare opportunity to join a respected, values-led organisation and play a key role in shaping its people, culture and learning agenda during an important period of organisational development.

Reporting to the Executive Director, you will become the senior people specialist and trusted adviser, providing expert guidance on employee relations, employment law, policy development, organisational culture and learning. Working closely with senior leaders and Trustees, you'll help strengthen people practice, build management capability and embed sustainable ways of working across the organisation.

Key Responsibilities

• Lead complex and sensitive employee relations matters.
• Provide expert employment law advice and guidance.
• Review, develop and implement people policies and processes.
• Coach and develop managers to confidently lead their teams.
• Drive organisational development, culture and leadership initiatives.
• Design and coordinate learning and development activity.
• Support senior leaders and Trustees with people-related governance and decision making.

About You We are keen to hear from experienced:

• Heads of People
• Senior HR Business Partners
• HR Consultants

You will bring:

• CIPD Level 7 qualification (or equivalent senior-level expertise).
• Significant experience in employment law and complex employee relations.
• Experience developing people policies, management capability and organisational culture.
• Strong stakeholder management, coaching and influencing skills.
• Excellent judgement, discretion and credibility.
• A commitment to equity, inclusion and values-led working.
• Availability to start at short notice and commit to an initial six-month contract, with potential for extension.

Why Join?

• Join an organisation at the forefront of environmental and social justice.
• Shape a newly created senior people role with genuine influence.
• Partner directly with senior leaders and Trustees.
• Help build lasting capability, culture and organisational impact.
• Flexible hybrid working, with remote working considered.
• Potential for the contract to be extended beyond the initial six-month term.

Please reply to this advert for further details.

We want you to have every opportunity to demonstrate your skills, ability and potential; please contact us if you require any assistance or adjustment so that we can help with making the application process work for you.