Thanks Wolfgang.
Yes I am using a C1ToolBar and your example has given me some ideas to try 
.
To be more specific I have a WinForm context menu which is assigned to the toolbar’s ContextMenu property.
When you right-click on the Toolbar the context menu is shown and one of the items in the context menu is the required removal function.
So I have to determine which toolbar is selected when I click the context menu item and hence remove it.