People - Meet the Team

London Quarter brings together expertise in property, building performance and fire door assessment, providing a unique combination of commercial understanding and technical measurement.

Our role is to deliver independent, objective insight into how fire doors perform containing smoke in real buildings.

Jonathan Wallach BSc (Hons) MSt (Cantab) FRICS FRGS Founder and Director

Jonathan has over 25 years real estate experience.

Jonathan is a Partner at Everton Phillips, a Central London investment agency advising on commercial property transactions.

Between leaving school and starting at University Jonathan installed fire doors and completed carpentry and joinery projects. He then started at Robinson Low Francis, undertaking Project Management and Quantity Surveying whilst reading Estate Management part time and gaining a first class honours degree.

Jonathan then qualified as a Chartered Surveyor in 1996 at Colliers Edman Lewis. He was approached by Gerald Eve and joined in April 2002 to Head up West End Investment, before founding Everton Phillips LLP, Property Investment Consultants, in 2005. Jonathan then gained a Masters in Real Estate from the University of Cambridge. He became a Fellow of the Royal Institution of Chartered Surveyors in 2024.

Jonathan passed both the practical and theory elements of the accredited FDM Fire Door inspection course in 2025 gaining the GQA qualification. The FDM course was fully endorsed by Dame Judith Hackitt in May 2025.

Jonathan is also a Court Assistant to the Worshipful Company of Chartered Surveyors. He is also a Fellow of the Royal Geographical Society.

He brings a strong understanding of:

  • Asset performance

  • Risk and liability

  • Decision-making from an owner and managing agent perspective

This commercial background underpins London Quarter’s approach.

Focusing not just on technical findings, but on clear, practical outcomes for clients

Bernard Hornung - Chief Operating Officer

Bernard specialises in air leakage and building performance measurement, with extensive experience in testing and analysing how buildings perform in practice.

His expertise includes:

  • Airtightness testing

  • Air permeability analysis

  • Diagnostic measurement of building envelope performance

At London Quarter, Bernard leads the scientific testing of smoke leakage, ensuring results are:

  • Accurate

  • Repeatable

  • Interpreted correctly

Within two years of enlisting in the Irish Guards in 1975, Bernard was a 20 year old Platoon Commander fighting fires in Central London, rescuing victims overwhelmed by carbon monoxide poisoning, one of the primary causes of fire-related deaths. "Some memories never fade, they stay with you, and you never forget the lesson learnt to prevent loss of life."

As a former British Army Officer with 15 years service, planning, teamwork, efficiency and calm expertise come naturally to him. thirty five years in real estate, the last five years of which included commercialising an air leak detector, Bernard recognises that airtightness is not just a technical issue. It is a leadership challenge. It means shifting the hierarchy. Coordinating all the trades in such a way that testing for airtightness is included at every stage. Starting with the factory testing of precision made components, and continuing throughout the entirety of the build programme. Thanks to the most modern Ultrasound equipment, Airtightness Testing is now a practical proposition.

His own personal experiences as a property developer confirm that a single missed joint, a tiny unsealed penetration in the wrong place, and the entire build programme unravels.

This has made Bernard zealous in his mission of using state of the art equipment to track down even the tiniest faults in your system, and ensure an end result of certified airtightness. And by using the right equipment in the right sequence, the final costs can be much more budget friendly than the alternatives, some of which could be very costly indeed.

Thomas Thompson BSc MSc Associate Director

Following his graduation from the University of Nottingham with a 2:1 in Biology, Tom served in the military as an officer in the Welsh Guards for six years. During his military career he completed two operational tours of Afghanistan and achieved the rank of Captain.

On leaving the Army, he joined JP Morgan as part of the military internship scheme. He worked in the Sales, Strategy and Planning team for UK funds. He was responsible for analyzing and developing the activities and methodologies used by the Sales team.

Tom has completed an MSc in Real Estate from the University of Estate Management (UCEM).