Laboratory | ISG

Healthcare Services Laboratories (HSL)

An award-winning transformation of an outdated 1960s office block in London, to one of Europe’s largest pathology laboratories for Healthcare Services Laboratories.
  • Customer
    Healthcare Services Laboratories (HSL)
  • Procurement Route
    JCT Design & Build Contract 2011
  • Completion Date
  • Quantity Surveyor
    Trident Building Consultancy
  • Value
  • Form Of Contract
    D&B 1
  • Structural Engineer
    KORE Structural
  • Area
    133,000 sq ft
  • Program Duration
    52 weeks
  • Architect
    Steffian Bradley Architects
  • ME Engineer


Completed in 2016 and known as the ‘Halo’ building, One Mabledon Place is flagship facility delivering the highest standards of clinical pathology services to the world’s brightest researchers, doctors and scientists and home to some of the world’s most advanced diagnostic technology.

HSL, a progressive partnership between University College London Hospitals NHS Foundation Trust, Royal Free London NHS Foundation Trust and The Doctors Laboratory is used as a facility for academic innovation, clinical training and research.

The design standards and technological innovations achieved in the development of this facility has changed the pathology landscape and will influence how pathology laboratories are designed and constructed around the world.

What we did

The complex project, which was delivered in partnership with Steffian Bradley Architects, saw ISG delivering the design and construction of office accommodation and core laboratory space within the building. Updating the existing high-rise building into a state-of-the-art facility required substantial structural alterations and the installation of building services.

Putting the challenging nature of this project into perspective, the project team was tasked with fitting out a world-class laboratory - which is typically between 4.5m-5m in height - into established office space with a height of only 3.5m.

By utilising our in-house Building Information Modelling (BIM) team, we addressed these issues digitally. Using BIM meant we could share this data easily with the project team and phase the integration of these complex services.

Industry-leading technologies in the facility include CL3 laboratories and a cutting-edge tracking and distribution system. This will enable the efficient management of samples throughout the building.

We additionally installed underfloor service distribution systems to maintain clear lines of sight throughout the laboratory space. Seamless building and equipment integration was a crucial part of the client’s vision.This was achieved through careful collaboration with HSL.

Awards and achievements

From industry-leading to award-winning, ISG has won three prestigious industry awards and was shortlisted as a finalist for our work on One Mabledon Place. Achievements include:

  • Winner - European Healthcare Design Awards, 2018
  • Winner - Building Better Healthcare Awards, 2018 – Best Internal Environment, Refurbishment
  • Winner - Annual Healthcare Estates IHEEM Awards Dinner, 2018 – Refurbishment Project of the Year
  • Finalist - Construction News Awards, 2018 – Project of the Year (£15m - £30m)

“The design standards and technological innovations achieved in the development of this facility have changed the pathology landscape, and will influence how these pathology laboratories are designed and constructed around the world”.

Paul Sharp, managing director, ISG