National Extremism Tactical Coordination Unit
This authority is not subject to FOI law, so is not legally obliged to respond (details).
"The National Extremism Tactical Coordination Unit (NETCU) is no longer in existence, as it merged with the National Public Order Intelligence Unit (NPOIU) and the National Domestic Extremism Team (NDET) in January 2011 to form the National Domestic Extremism and Disorder Intelligence Unit (NDEDIU)." (Source)NETCU state the following on their website: http://www.netcu.org.uk/foi.jsp
"NETCU is not a public authority as defined by Schedule 1 of the FOIA. Therefore there are no obligations on NETCU to disclose information under the Act.
In the spirit of the Act, NETCU aims to make available as much information that it properly can."
They don't publish an email address, but media enquiries are handled by ACPO - requests for information made via WhatDoTheyKnow will be sent to ACPO.
This authority no longer exists, so you cannot make a request to it.