Why JJM?

The advantage of knowledge and experience

Our first-hand experience at the most senior levels gives us a wealth of knowledge across investment, development, and operations – we understand and monitor the risks, nuances, and day-to-day realities of supported and affordable housing. We’re driven to apply this unique insight to make social housing work, both operationally and financially.

Deep expertise

With a wealth of lived experience across social housing, we understand the intricacies, development, operations and risks of complex, multi-stakeholder schemes.

Responsible investments

Our business is built on transparency, responsibility and investing in a way that’s smart, sustainable and benefits all stakeholders, from investors to registered providers and residents.

Activists & advocates

We’re raising standards in the social housing sector by actively contributing to conversations about change and supporting investments that deliver real societal value.

Our team

A shared commitment to transforming social housing

We’re a small, agile team of investment, development, and real estate veterans, united in our shared belief in a better future for social housing.

Mark Jagger

Ben Jones

Andrew Muzzlewhite

Judith Stiles

  • Mark spent 21 years at JLL where he was an International Director and CEO of the East European business. Going on to join Regus/IWG, he ran the company’s global development programme, before founding Trust Estates, an investment and advisory business, and Valeo Europe, a vertically integrated developer and operator of purpose-built student housing across Western Europe.

    Mark went on to found Land&Co, delivering UK social impact projects. Land&Co delivered over 500 new homes for vulnerable adults, deploying ESG capital in the process, and forming a joint venture fund with institutional capital partners.

    Mark has over 30 years’ experience in the property sector, covering business management, investment, master planning, development, finance and asset management.

    Mark is a Fellow of the Royal Institution of Chartered Surveyors.

  • Ben has over 20 years’ experience in investment, development and operational platforms, including 15+ years in real estate, both in the UK and internationally. His experience spans housing, care, social infrastructure, and corporate real estate.

    He began his real estate career at Regus/IWG, supporting the delivery of 1,800 new centres globally over a four-year period.

    Ben later joined Land&Co as Group Managing Director, leading acquisitions, capital structuring and development across a national portfolio of projects. He worked closely with institutional investors and operational partners to build scalable delivery models, combining secure long-term income with strong governance and risk management.

    Ben brings deep expertise in capital-led development, investment structuring and complex stakeholder environments, with a track record of turning ambitious projects into executable platforms.

  • Andrew spent his early career at DTZ in London and Paris before moving to Moscow. He then spent 18 years in Russia, where he held senior positions with TIME Construction (later Mott MacDonald) and Prologis, focusing on development and fund management. Moving into direct investment and development with Hines, he was Managing Director with responsibility for the company’s activities in Russia.

    After returning to the UK, Andrew joined Land&Co as Managing Director of its Development Management business, delivering the Group’s social housing projects.

    Andrew has over 25 years’ experience in the property sector, having worked in advisory, investment and development across Europe.

    Andrew is a Chartered Member of the Royal Institution of Chartered Surveyors.

  • Judith started her career with NatWest Bank, where she spent 13 years before setting up her own accountancy business. Re-entering the corporate world in the commercial vehicle sector, she held the position of Group Finance Director, before moving into the exhibition sector as Finance Director for a North-West UK based exhibition company.

    Judith then joined Land & Co as Group Finance Director, with responsibility for supervising all financial transactions and reporting activities, including oversight of the joint venture fund accounting services.

    Judith has over 40 years’ experience in finance and has held senior financial roles in various UK sectors.

    Judith is a Fellow Member of the Association of Accounting Technicians.