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

Graduate Conservation Surveyor

Accounts Manager

Practice Manager

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 Charetered & Conservation Accredited Building Surveyor
  • MScCHE, BA(Hons), IHBC, MCIOB, MRICS

Rupert is a Chartered and Conservation Accredited Building Surveyor with the Royal Institution of Chartered Surveyors (RICS), a Chartered Construction Manager with the Chartered Institute of Building (CIOB), and a Full Member of the Institute of Historic Building Conservation (IHBC). He specialises in the conservation, repair, adaptation and management of historic buildings, with multidisciplinary expertise encompassing historic building surveying, technical design, construction management, contract administration and heritage planning.

Having previously worked for a number of highly respected organisations within the construction and conservation sectors, Rupert founded Janus Conservation in January 2020 to provide an integrated approach to the investigation, conservation, design and delivery of work to historic buildings.

An experienced historic building surveyor, Rupert has particular expertise in the investigation and diagnosis of defects affecting traditional and historic buildings, drawing upon a detailed understanding of traditional construction, materials, building pathology and conservation repair. His technical expertise extends to the design and specification of complex conservation works, from initial investigation and the development of repair strategies through to detailed design and construction.

Rupert is an expert Contract Administrator under the JCT suite of lump-sum building contracts, specialising in complex historic building projects. His experience encompasses procurement, tendering, contract administration, construction management, cost and programme control, quality management, and the resolution of complex technical and contractual issues arising during conservation works.

Rupert acts as Surveyor to the Fabric for a number of nationally significant historic buildings, including Nicholas Hawksmoor’s Grade I listed Christ Church, Spitalfields, the Grade I listed Charles Dickens Museum and Grade I listed Spencer House. He also undertakes quinquennial inspections for numerous historic churches.

Alongside his surveying and project delivery work, Rupert provides heritage planning consultancy for listed buildings and other heritage assets, advising on significance, heritage impact, conservation philosophy and the development of proposals that reconcile change with the conservation of historic fabric.

Rupert has a particular professional interest in the responsible retrofit of traditional and historic buildings, combining improvements to energy efficiency and environmental performance with an understanding of traditional building physics, moisture behaviour and material compatibility. He is a qualified Retrofit Designer under PAS 2035 and, as an RICS Conservation Accredited Building Surveyor, holds the specialist conservation accreditation required for the design of higher-risk retrofit projects involving traditional and historic buildings.

Elsa Sibley

Conservation Surveyor

  • BSc (Hons), AssocRICS, AssocIHBC

Elsa joined Janus Conservation as part of our 2023 graduate intake and has since progressed to the role of Conservation Surveyor, developing a multidisciplinary portfolio across building surveying, heritage consultancy and the delivery of conservation-led repair projects. Her work 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 joined Janus Conservation as part of our 2024 graduate intake and has since progressed to the role of Conservation Surveyor, developing a multidisciplinary portfolio across heritage consultancy, building surveying and the delivery of conservation-led repair projects. Her work encompasses significance assessments, heritage statements, condition surveys, and the delivery of sensitive repair schemes, including contract administration and quantity surveying for 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 has developed particular expertise in heritage consultancy, providing planning advice, research-led assessments and conservation strategies that support clients, design teams and planning authorities.

With strong capability 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 continues to develop her technical expertise in building surveying, condition assessment and specification writing, contributing to the design and delivery of conservation-led 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, through which she is developing her professional and business leadership skills alongside her expanding technical portfolio.

Hannah Beatson - Photo

Hannah Beatson

Conservation Surveyor

  • MSc, BA

Hannah joined Janus Conservation as part of our 2025 graduate intake and has since progressed to the role of Conservation Surveyor, developing experience across heritage consultancy, building surveying and the delivery of conservation-led repair projects to historic and traditionally constructed 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, Hannah gained practical experience through a SPAB Working Party, undertaking traditional repair techniques including lime mortar pointing, gauged brickwork and stone repair. This experience has strengthened her understanding of traditional materials, construction methods and the practical realities of conservation repair on site.

Since joining Janus Conservation, Hannah has continued to develop her technical capability in building surveying, building pathology, heritage assessment and the specification and delivery of conservation repairs. Her role provides experience across the project lifecycle, from initial research, inspection and assessment through to the development and implementation of appropriate repair strategies.

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

Patrick Mason

Patrick Mason

Graduate Conservation Surveyor

  • BSc

Patrick joined Janus Conservation as part of our 2026 graduate intake and is developing his career across heritage consultancy, historic building surveying and the delivery of conservation-led repair projects. He has a particular interest in the continued use of historic buildings and the relationship between conservation, sustainable adaptation and long-term property management.

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 developing his technical knowledge of historic and traditionally constructed buildings. He supports the team with 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 practical and sustainable approaches to the conservation of historic buildings that enable them to remain useful, adaptable and economically viable. His background in property and planning provides a broader perspective as he develops his understanding of how heritage significance, building condition, appropriate repair, sustainable adaptation and long-term management can be considered together.

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.