Publication request form 933 available on the site under the PUBLICATIONS drop down menu.
As stated above NOTAM are not normally issued by AIS, they just publish them. If a NOTAM is issued it will be the responsibility of the issuing authority to ensure that it conforms to the ICAO standard referenced above. For most airspace restrictions and nav warnings the issuing authority will be the Airspace Utilisation Section of the Directorate of Airspace Policy at the CAA.
Mike