Independent regulator and competition authority
for the UK communications industries.

White Space Database Operators

Page last updated on 30 June 2016

This site contains the discoverable list of White Spaces Databases (WSDBs) operated by organisations that have been qualified by Ofcom to operate in the United Kingdom and which are currently providing WSDB Services to white space devices (WSDs).

A master WSD may only obtain operational parameters from a WSDB that is in this list.

Master WSDs that intend to operate in the United Kingdom should download this list of WSDBs before making any radio transmissions in the UHF band.

After download of the list, the master WSD should contact one of the WSDBs in it, in order to obtain the operational parameters for radio transmissions in the UHF band.

List of WSDBs qualified to operate in the United Kingdom and currently providing WSDB Services

WSDs may only operate in the UHF band in the UK on a licence exempt basis in accordance with operational parameters provided by a WSDB which is operated by an organisation listed in Schedule 1 of the Wireless Telegraphy (White Space Devices) (Exemption) Regulations 2015.

The following organisations have currently been qualified by Ofcom and are listed in those Regulations as permitted to operate WSDBs from which WSDs may obtain operational parameters:

  • The Council for Scientific and Industrial Research (CSIR)
  • Fairspectrum Oy
  • Google UK Limited
  • Microsoft Ireland Operations Limited
  • Nominet UK,
  • Sony Europe Limited
  • Spectrum Bridge Incorporated

These WSDBs will be added to the discoverable list accessible to WSDs as an xml file once they have informed Ofcom that they are ready to start providing WSDB Services to devices

The list is accessible to WSDs as follows:

The XML schema file can be found at:

This document specifies the HTTPS request that a master WSD shall send in order to obtain the xml file, and the contents of the xml file.

TVWS Pilot Trials

The TVWS Pilot is now closed and the list of Pilot WSDBs qualified to operate in the United Kingdom has been removed.

For queries regarding operation of WSDs and WSDBs please see or contact