About Us

Janus Conservation Ltd is a specialist historic building surveying and heritage planning consultancy, with offices in Thame, Oxfordshire, Bloomsbury, London and Epping, Essex.

We deal exclusively with the historic environment, working with both commercial and private/residential clients along with major landowners such as the National Trust and Royal Household. We are both RICS Regulated and an IHBC recognised Historic Environment Service Provider. 

We pride ourselves on providing meaningful and pragmatic advice with an industry-leading customer experience.     

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Our Team

Director
Historic Building Surveyor & Heritage Consultant

Conservation Surveyor

Conservation Surveyor

Conservation Surveyor

Accounts Manager

Practice Manager

Conservation Surveyor

Conservation Surveyor

The Climate Change

The Climate Pledge

In August 2021, Janus Conservation joined a group of highly influential organisations by signing up to The Climate Pledge and committing to reaching net-zero carbon emissions by 2040. Committing to the Pledge further reinforces Janus Conservation’s wide-ranging focus on sustainability.

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Rupert Hilton

Rupert Hilton

Director

  • RICS Conservation Accredited Building Surveyor
  • CIOB Conservation Certified Specialist
  • MScCHE, BA(Hons), IHBC, MCIOB

Rupert is an accomplished historic building surveyor, construction manager and heritage consultant, and one of only a handful of practitioners in the UK to hold full conservation accreditations with the Royal Institution of Chartered Surveyors (RICS), the Chartered Institute of Building (CIOB) and the Institute of Historic Building Conservation (IHBC). In addition, he is now seeking to become a full member of the Institute of Conservation (ICON) – illustrating his passion for the historic environment.

Having previously worked for a number of very well-respected companies, Rupert quickly established himself as one of the most versatile, qualified and capable conservation practitioners in the country, before founding Janus Conservation in January 2020.

He currently acts as a quinquennial inspector to numerous historic churches, including being named surveyor of the fabric to Nicholas Hawksmoor’s iconic grade I listed Christ Church, Spitalfields in 2022.

Rupert is now particularly interested in ‘retrofit’, making responsible and technically compatible improvements to the energy efficiency of historic buildings, and is a qualified Retrofit Designer for Pathway C (High-Risk Schemes) under PAS 2035.

Elsa Sibley

Conservation Surveyor

  • BSc (Hons), AssocRICS, AssocIHBC

Elsa is a Conservation Surveyor at Janus Conservation, working across building surveying, heritage consultancy, and the delivery of conservation-led repair projects. Her multidisciplinary role includes condition surveys, significance assessments, heritage statements, and the design and management of sensitive interventions to historic and traditionally constructed buildings.

She holds a BSc (Hons) in Building Surveying and is an Associate member of both the Royal Institution of Chartered Surveyors (AssocRICS) and the Institute of Historic Building Conservation (AssocIHBC). Building on her surveying background, Elsa has developed strong capability in project delivery, including contract administration, cost management, and technical specification writing for listed building works.

Elsa’s work spans the full project lifecycle, from early-stage research and assessment through to on-site management and quality control. She brings a practical, technically confident approach to building pathology, supported by a clear understanding of legislation, planning policy, and best practice in traditional building repair.

She is currently working towards Chartered status with the CIOB (MCIOB) and RICS Conservation Accreditation. As part of Janus Conservation’s Emerging Leaders Initiative, Elsa is developing her professional and business leadership skills alongside her expanding technical portfolio.

Millie Totman

Millie Totman

Conservation Surveyor

  • MSc, BA

Millie is a Conservation Surveyor at Janus Conservation, working across heritage consultancy, building surveying, and conservation-led conservation projects. Her multidisciplinary role encompasses the assessment of significance, heritage statements, condition surveys, and the delivery of sensitive repair schemes, including contract administration and quantity surveying on traditional and historic buildings.

She holds an RICS- and IHBC-accredited MSc in Historic Building Conservation from Kingston University London, building on a First-Class BA in History from the University of Nottingham. Millie continues to specialise in heritage consultancy, providing planning advice, research-led assessments, and conservation strategies that support clients, design teams, and planning authorities.

With particular expertise in archival research and policy analysis, Millie prepares well-evidenced heritage statements and impact assessments tailored to the constraints and opportunities of each site. Alongside this, she is developing strong technical capability in surveying, reporting, and specification writing, contributing to the delivery of conservation-led design and construction projects.

Millie is currently working towards full membership of the IHBC, Chartered status with the CIOB (MCIOB), and RICS Conservation Accreditation. She is also part of Janus Conservation’s Emerging Leaders Initiative, reflecting her commitment to both technical excellence and professional leadership.

Hannah Beatson - Photo

Hannah Beatson

Conservation Surveyor

  • MSc, BA

Hannah is a Conservation Surveyor at Janus Conservation, supporting heritage consultancy, building surveying and conservation-led repair projects across a range of historic buildings.

She completed her MSc in Historic Conservation at Oxford Brookes University, where she developed a strong grounding in building recording, architectural analysis and conservation policy. Her academic work was recognised with the Levrant Prize for Design in Conservation. Alongside her studies, she gained practical experience at a SPAB Working Party, assisting with lime mortar pointing, gauged brickwork and stone repairs. This has strengthened her understanding of traditional materials, construction methods and the practical realities of repair on site.

Before moving into conservation, Hannah worked in publishing and project coordination. That experience informs her structured approach to projects, her attention to detail and her ability to communicate technical information clearly and concisely.

Vic Jones

Vic Jones

Accounts Manager

Vic is Accounts Manager at Janus Conservation and is responsible for overseeing the day-to-day financial administration of the practice. An experienced bookkeeper and a member of the Institute of Certified Bookkeepers (ICB), she works with clients, suppliers and the wider team to ensure accounts are managed efficiently, from invoicing and payment processing through to supporting the smooth financial running of projects.

Committed to making financial processes as straightforward and transparent as possible, she prides herself on providing a friendly, responsive service that reflects our commitment to delivering an exceptional client experience.

Christina Reilly

Christina Reilly

Practice Manager

Christina is Practice Manager at Janus Conservation, where she oversees the day-to-day operations of the business while providing executive support to the senior leadership team. Her role encompasses office management, business administration, event coordination and supporting the continued growth of the practice.

With over 20 years’ experience across professional services, including investment banking and communications Christina brings a proactive, organised and solutions-focused approach to every aspect of the business.

Christina holds a BA (Hons) in Media Performance with French from the University of Bedfordshire and is committed to delivering operational excellence and exceptional client service.

Leah Matthews

Leah Matthews

Graduate Conservation Surveyor

  • BA(Hons)
Leah is a Graduate Conservation Surveyor at Janus Conservation and joined the Janus Graduate Scheme as part of the 2026 intake. She has a strong interest in historic buildings and their conservation and is developing her career across heritage consultancy, historic building surveying, and the delivery of conservation and repair projects. She holds a BA in Classical Studies from the University of Bristol and is currently completing an RICS-, IHBC- and RTPI-accredited MSc in Historic Conservation at Oxford Brookes University. Her academic background reflects a longstanding interest in history and the built environment, with her postgraduate studies developing this further through British architectural history, historic building analysis and recording, traditional construction and repair, building conservation, and heritage policy. At Janus, Leah is developing this interest through practical experience across the practice. She supports historic building inspections and surveys, heritage research and assessment, report preparation, and the development and delivery of conservation projects. She is particularly interested in understanding how historic buildings have developed, how and why traditional materials deteriorate, and how informed conservation and repair can secure their long-term future. Leah also has experience updating Buildings at Risk registers through archival and site-based research, reviewing planning documents and heritage records, and preparing assessments of historic buildings. This combination of academic study, research, and practical experience provides a strong foundation for her developing career as a conservation surveyor.
Patrick Mason

Patrick Mason

Graduate Conservation Surveyor

  • BSc
Patrick is a Graduate Conservation Surveyor at Janus Conservation and joined the Janus Graduate Scheme as part of the 2026 intake. He has a strong interest in historic buildings and their continued use and is developing his career across heritage consultancy, historic building surveying, and the delivery of conservation and repair projects. He holds an RICS-accredited and partially RTPI-accredited BSc (Hons) in Real Estate and Planning from the University of Manchester and is completing an RICS- and IHBC-accredited MSc in Conservation of Historic Buildings at the University of Bath. His academic background combines property, planning, and building conservation, providing a strong foundation in the economic, environmental, and planning context within which historic buildings are conserved and managed. Through the Janus Graduate Scheme, Patrick is beginning to develop his technical knowledge of historic and traditionally constructed buildings. He supports the team across building inspections and surveys, heritage research and assessment, report preparation, specification, and conservation project delivery, gaining exposure to traditional materials and repair, building pathology, heritage recording, and conservation practice. Patrick is particularly interested in finding practical and sustainable ways to conserve historic buildings while allowing them to remain useful, adaptable, and economically viable. His background in property and planning provides a valuable perspective as he develops an understanding of how heritage significance, building condition, appropriate repair, sustainable adaptation, and long-term property management can be considered together.