Coastal Forces Veterans

Can anyone confirm if the Coastal Forces had any specific insignia a) for the CF as a whole b) for any of the Bases e.g. HMS Hornet and c) if any of the Flotilla's had their own badges/emblems/insignia - i have seen one for the 23rd based on the Free French Cross of Lorraine for example. The bullion badges in officers' caps appear to be standard RN design. Obviously, if there are any insignia, links to sources would be much appreciated!