Team hands

Our teams

At Cornerstone, we know that our people are the difference between simply providing care and providing purposeful, enriching and meaningful experiences every moment of every day. 

All our colleagues, from our carers and nurses  to hospitality and housekeeping, activities, maintenance, and support teams, are picked for their aptitude, experience, and empathy. 

Our teams are trained and qualified to care for people who have sometimes been unable to stay in other care services because their needs have been deemed too high or too challenging. But at Cornerstone, our people's expert clinical care skills and approach mean that people with the most complex and multiple needs can find a place to call home

Meet the team

Our Senior Leadership Team ensures our services run safely and effectively and that our nursing and care teams are well supported so they can focus on enriching the lives of our residents.

Board & Executives
Image of Paul Hayes

Paul Hayes

Chief Executive Officer
Paul started working as a care assistant in a care home for people with dementia aged 16. He fell in love with it from the first moment and has spent 30+ years working across the public and independent sector within health and social care. Paul has an MBA and graduated from Harvard Business School, having completed the Global Healthcare Programme in Boston, US.
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Vivien Ziwocha

Chief Operating Officer
Vivien is a visionary leader with expertise in commercial health management and governance. She transforms care services into vibrant, engaging spaces where innovation and human connection thrive. Passionate about fostering meaningful experiences, she ensures every interaction brings life, creativity, and purpose.
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Jens Kleyenstuber

Finance Director
Jens, a Chartered Accountant trained at Deloitte, has over a decade of finance experience in the care sector, including roles as Head of Commercial Finance for Lifeways Group and Cambian Group. His private equity expertise drives strategic and financial growth.
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Paul Callander

Chair
With over 44 years of experience in Health and Social Care across public, not-for-profit, and private sectors, Paul brings invaluable expertise to the Chairman role. His extensive background spans commissioning, Local Authority roles, and services for vulnerable adults and children, offering a seasoned perspective to the Cornerstones HC leadership team and Board.
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Dr Claire Royston

Independent Chair of Safeguarding & Quality Committee
Claire is a Consultant Psychiatrist and senior leader with 20 years of experience across health and social services, specialising in complex mental health, older adults, and learning disabilities. Passionate about advocacy and innovation, Claire focuses on improving lived experiences through technology, governance, and quality assurance.
Senior Leadership Team
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Matthew Mowlem

Group Financial Controller
Matthew, our Group Financial Controller, has extensive experience, having previously led teams at Sony Europe and at an AIM-listed property developer. He's a Chartered Management Accountant with degrees from Robert Gordon University, the University of Exeter, and Manchester Metropolitan University.
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Leanne Parmenter

Head of Business Development
Leanne has over 17 years of experience in health and social care, specialising in NHS commissioning, strategic planning, and service improvement. She leads our referrals process, strategic marketing, and growth strategies while also volunteering as a charity Board trustee.
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Mo Quadri

Director of People and Culture
Mo is a passionate HR leader with over 20 years of experience across sectors, specialising in workplace culture, governance, and people development. A Chartered Fellow of the CIPD with master’s degrees in HR and Law, she blends strategic insight with a people-focused approach.
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Laura Newton

Head of Operations Support
With over 20 years in the care industry, Laura began as a carer and advanced to holding senior operational positions. Laura’s expertise drives continuous improvement in ensuring high-quality care for our residents.

Join the team

If you have a passion for helping people with complex needs live enriching lives, and would like to know more about working at Cornerstone – get in touch. 

We are always keen to hear from like-minded professionals.

Join the team