About us
Source: gov.uk (2025-10-14)

The Defence Infrastructure Organisation (DIO) is the estate expert for defence, supporting the armed forces to enable military capability by planning, building, maintaining, and servicing infrastructure.

Responsibilities

We are responsible for enabling defence people to live, work, train and deploy at home and overseas.

Our vision is to equip defence with a significantly smaller, more efficient, better quality estate.

Our responsibilities include:
- plan and deliver major capital projects and lifecycle refurbishment
- provide utilities services
- manage soft facilities management (ie cleaning and catering)
- provide a safe place to train
- allocate Service Families Accommodation
- procure and manage routine maintenance and reactive repair
- provide a central register of asset information to advise infrastructure planning
- act as steward of the defence estate
We are proud to be part of the National Armaments Director (NAD) Group (https://www.gov.uk/government/groups/national-armaments-director-nad-group). Together we maximise our warfighters’ ability to operate, deter, fight and win.

DIO Strategy

DIO Strategy (https://assets.publishing.service.gov.uk/media/5f1e9536e90e0745691135e5/1_2_150083_DIO_Strategy_TL-Report_2020-2030_Email.pdf) (PDF, 4.36 MB, 13 pages)

The world continues to change at pace. In response defence is modernising, mobilising and transforming. The Defence Estate must evolve with it; becoming more resilient against increased uncertainty and evolving threats including climate change and disruption from state aggressors.

DIO is committed to transforming to meet these challenges, continuing to care for the defence estate and those who depend on it. Enabling defence to live, work, train and deploy.

Our DIO Strategy (https://assets.publishing.service.gov.uk/media/5f1e9536e90e0745691135e5/1_2_150083_DIO_Strategy_TL-Report_2020-2030_Email.pdf) (PDF, 4.36 MB, 13 pages) sets the ambition for the organisation: to be one team, provide excellent advice and outstanding delivery. The strategy also sets out the areas of focus for change over the next 10 years. These include:
- implementing an asset management system for defence infrastructure which helps us and our customers make better decisions based on really good information and data
- improving delivery to our customers, reducing disruption to the work and lives of service personnel and their families caused by poor infrastructure performance or infrastructure failure
- becoming an expert in sustainability, climate change and the environment, providing advice that leads to environmentally sound infrastructure decisions.
Watch the video below explaining what we do.

DIO: what we do (http://www.youtube.com/watch?v=kl9c3vCIRqY)

Priorities

We will enhance our capability to advise and our capability to deliver. This will bring focus on how we drive more informed asset management and better infrastructure planning to enhance our ability to advise our customers. Our ability to deliver will be improved through specific focus on our procurement processes, investing in how we manage our supplier relationships and driving performance management.

Our key enabling functions, finance, commercial, people, and corporate services are all critical to supporting the delivery of DIO’s customer capability needs. Each enabling function will deliver cross-cutting projects that will transform the way we operate and drive continuous improvement across the organisation.

We will modernise the organisation, embracing new technologies and making significantly more use of digital systems to enable more effective delivery of our business. We will focus on optimising the Infrastructure Management System (IMS) and its interfaces, improving how our systems and data integrate with our industry partners, as well as automating internal and external reporting.

Who we are

We are led by Chief Executive Mike Green.

He is supported by an executive management team comprising:
- David Brewer (Chief Executive Defence Developments)
- Phil Riley (Accommodation Director)
- Charles Hoskins (Director Major Programmes and Projects)
- Moira Hassel (Director Regional Delivery)
- Major General Andy Sturrock (Director of Strategy and Plans)
- Jonathan Sawyer (Director of Corporate Operations)
- Claire Benham (Commercial Director)
- Lucy Bogue (Director Security Services)
- Sarah Wooden (Head of People Team)
- Tricia Jakeman (Head of Corporate Affairs)
Find out more about DIO by reading our Inside DIO blog (https://insidedio.blog.gov.uk/).

Related information
- Firing notices (https://www.gov.uk/government/organisations/ministry-of-defence/series/firing-notice)
- Safety alerts (https://www.gov.uk/government/organisations/ministry-of-defence/series/dio-safety-alerts)
- Byelaws (https://www.gov.uk/ministry-of-defence-byelaws)
- Service family accommodation (https://www.gov.uk/defence-infrastructure-organisation-service-family-accommodation)
- MOD estate rationalisation plan (https://www.gov.uk/government/publications/mod-estate-rationalisation-plan)