UK Hydrographic Office

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What the UK Hydrographic Office does

The UK Hydrographic Office (UKHO) is a world-leading centre for hydrography, specialising in marine geospatial data to support safe, secure and thriving oceans.

UKHO is an executive agency, sponsored by the Ministry of Defence.

Read more about what we do


Guidance and regulation

See all guidance and regulation

News and communications

See all news and communications

Transparency and freedom of information releases

See all transparency and freedom of information releases

Our management

Non-executive Chair, UKHO
Chief Executive, UKHO
Non-executive director, UKHO
HM Hydrographer of the Navy
Non-executive director, UKHO
Non-executive director, UKHO
Chief Technology Officer
Chief Customer Officer
Director of Corporate Services
Chief People Officer
Director of Operations
Director of Data Acquisition​

Contact UKHO

UK Hydrographic Office

Admiralty Way

United Kingdom

Main switchboard

+44 (0)1823 484444

Radio Navigational Warnings

Radio Navigational Warnings

+44 (0)1823 353 448

Archives and Research

Archives and Research

+(0)1823 483341

Vertical Offshore Reference Frame (VORF)

Copyright and Licensing

Direct Number

+44 (0)1823 483899

International Cartographic Training

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 Requests

UKHO - Secretariat
UK Hydrographic Office
Admiralty Way
United Kingdom

UKHO Secretariat

+44 (0)1823 484444 (direct line)

Also to be used for Environmental Information Requests.

UKHO FOIs are released under the MOD publication scheme following the FOI Code of Practice and ICO Guidelines.

High profile groups within UKHO

Corporate information

Jobs and contracts

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