Defence Infrastructure Organisation

Latest from Defence Infrastructure Organisation

See all latest documents

What we do

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.

DIO is part of the Ministry of Defence.

Read more about what we do


Policy papers and consultations

See all policy papers and consultations

Transparency and freedom of information releases

See all transparency and freedom of information releases

Our management

Chief Executive, DIO

Contact DIO

Office address

St George’s House
DMS Whittington
WS14 9PY
United Kingdom

Housing enquiries: calling from UK

0800 707 6000

Housing allocation enquiries: calling from overseas

+44 151 728 1630

Security Service Group (SSG): SSG related enquiries only

Security Services Group: security furniture enquiries

During business hours, DIO media enquiries should be redirected to

For urgent out of hours media enquiries contact the MOD press office on

02072 187907

Make an FOI request

  1. Read about the Freedom of Information (FOI) Act and how to make a request.
  2. Check our previous releases to see if we’ve already answered your question.
  3. Make a new request by contacting us using the details below.

Freedom of Information Act and Environmental Information Regulation requests

MOD Information Rights Team
Ground floor, zone D
Main Building
United Kingdom

Not to be used for requesting your own information (Subject Access Request), service records including for deceased relatives, or pension enquiries.

Corporate information

Jobs and contracts