To remove one of your listed suppliers you will need to log in and go to the Maintain Your Suppliers section under the ADVERTISING menu.
From here you will need to find the supplier in questions by searching on their name or expertise. Clicking the relevant Supplier Name will bring up their details.
When you have loaded the supplier's details there will be a button to Delete. This will ask you to confirm your action before continuing.
If a supplier is currently invited to a tender you will be alerted that their invitation will also be removed. Suppliers will also be removed from any Supplier Panels they are included in.