Sister companies, Size Group and Walter Lilly are seeking a Senior Health and Safety Manager to join their shared team on a full-time, permanent basis, working as part of their parent company, Wize Holdings.
Who is Size Group?
Launched in 2009 as a small construction venture between two friends, Size Group brings together the vital elements of property from the construction of luxury buildings through to the maintenance and management of a property portfolio.
Who Is Walter Lilly?
Founded in 1924, Walter Lilly is a premier provider of construction services for iconic landmark and heritage buildings, and state-of-the-art science and higher education facilities across London and the Home Counties.
The Benefits
This is a great opportunity for an experienced Senior Health and Safety Manager, with a strong background in construction, to join our forward-thinking and collaborative organisation.
Be part of a company that values quality, safety, and innovation.
Influence strategic decisions and shape the future of SHEQ in luxury construction.
Work on some of the most prestigious projects in the UK.
Enjoy a competitive salary and benefits.
As part of a growing group with ambitious plans, you’ll benefit from strong leadership support and the chance to help shape the success of our most high-profile projects.
The Culture
Our values underpin who we are. They form an important benchmark for everyone – collectively and individually. We are:
Empathetic - People-driven and focused
Tenacious - Relentless pursuit of the highest standards
Integrity - Integrity earns trust. Trust builds relationships
Entrepreneurial - Self-starters that push beyond the obvious
We boast a culture that is focused on training and development, career paths and internal progression. What’s more, we’re committed to our employees and offer a range of benefits to support your lifestyle both in and out of the workplace.
The Role
We are seeking a Senior Health & Safety Manager to lead health, safety and wellbeing across our Western and Southern Home Counties project portfolio. Working across two specialist construction businesses within the Group, you will support the safe delivery of complex projects including super‑prime residential schemes, heritage refurbishments and technically challenging science and higher education facilities.
This role has a strong focus on early-stage construction activity, including RC frame and groundworks, and requires a visible, proactive presence on site. You will provide both strategic leadership and hands‑on support, ensuring consistent standards, robust risk management and a positive safety culture across multiple live projects.
Key Responsibilities:
Lead the implementation of the Group’s Health & Safety strategy across Western Counties projects, ensuring alignment with company values and project objectives.
Provide specialist Health & Safety leadership during enabling works, groundworks and RC frame stages, ensuring high‑risk activities are effectively planned and controlled.
Support project and pre‑construction teams with method statements, sequencing, temporary works considerations and risk assessments.
Promote a strong, collaborative safety culture across employees and supply chain partners.
Carry out regular site inspections, audits and safety reviews, driving timely close‑out of actions.
Oversee investigation of incidents, near misses and unsafe conditions, identifying root causes and implementing lessons learned.
Engage confidently with clients, consultants, local authorities and regulators, representing the Group professionally.
Monitor subcontractor competence, compliance and performance, particularly for groundworks and concrete frame packages.
Line manage and mentor Health & Safety Advisors, supporting capability development and consistency of approach.
Track and report on health, safety and wellbeing performance metrics for senior leadership review.
About You
To be considered for this role you must be or have:
A senior‑level Health & Safety professional, chartered or working towards chartership (e.g. IOSH CMIOSH), with a NEBOSH Diploma or equivalent.
Demonstrable experience working on RC frame and groundworks projects, ideally within complex or high‑value construction environments.
Strong working knowledge of UK construction legislation, including CDM and best practice standards.
Comfortable operating both strategically and operationally, with the credibility to influence site teams and senior stakeholders.
Pragmatic, solutions‑focused and commercially aware, able to balance safety leadership with programme and delivery pressures.
An engaging communicator with the confidence to challenge constructively and support teams at all levels.
Organised, adaptable and comfortable travelling across multiple sites within the Western Counties.
Passionate about raising standards and embedding a genuine culture of safety, quality and wellbeing.
Full UK driving licence and access to a vehicle is essential for this role.
How to Apply
So, if your skill set matches the above and the prospect of helping deliver some of the country’s finest projects appeals to you, please reach out by clicking Apply.
Your application will be processed by Size Group, and interviews will be conducted on a rolling basis as suitable candidates apply. We therefore encourage you to submit ASAP to avoid missing out!
