Are you sure you need to register? If you already have a NICEIC login (for either Building Control, NICEIC Direct or the NICEIC.com secure area) - you should not re-register, simply use your existing credentials.
If you have an existing account and create a new one, you may need to contact support to confirm QS status on the new account.
NICEIC Registrant Number
Approved Contractors - this is the 9 digit number (including the final '000' if you have a single branch).
Domestic Installers - this is the 6 digit number including the 'D' prefix.
You must have completed the enrolment process with NICEIC before registering for NICEICOnline.com, if you haven't done so yet please complete this first.Learn about registration