Defence and justice design and construction services

We are proud to be a preferred contractor for the important work that our defence and justice departments and organisations do.

The people who work in defence and justice maintain stability and security in our cities, and we have extensive experience in this sector. We have worked on projects with the Ministry of Justice (MoJ) Ministry of Defence (MoD), the Defence Infrastructure Organisation (DIO) and Aspire Defence, who are delivering an important infrastructure project for the MoD. We’ve also worked with BAE Systems, where we've delivered over £35 million of work not only in the UK, but overseas too.

We were appointed to the six-year MoJ Strategic Alliance Agreement Framework for Construction in 2012. The framework covers new build, refurbishment and maintenance at prisons, courts, the probation service and tribunals. Under an earlier framework, we delivered more than 40 projects valued at over £82 million. Our previous work with the MoJ included the Coroner's Court facility for the Hillsborough Inquests in Warrington, upgrade work at HMP Leeds, HMP Wakefield and HMYOI Wetherby.

Our core services

ISG is different. Our origins in fit out means we have meticulous attention to detail and focus on the client’s needs and business drivers like no other, and we know that every project is a technology project. Which is why we acknowledge our service offer is equally about fit out, technology and construction.

Fit out

Our track record reveals broader experience across a wider range of projects than any other provider in the market.


Our dedicated technology solutions team capable of advising and implementing for our clients across all sectors.


We have a strong track record of construction and engineering projects, from single-storey construction to large-scale.

If you would like to speak to ISG about any requirements you may have, please let us know by filling in the form below.


Scott Clark - ISG
  • Scott Clark
  • Senior Business Development Manager, UK Construction Northeast
Natasha Cottell - ISG
  • Natasha Cottell
  • Business Development Manager, UK Construction West