 Clwyd County Council and its six districts ceased operations at midnight on 1 April 1996 , and local government was immediately transferred to the new principal areas of Conwy , Denbighshire , Flintshire and Wrexham . However , although bearing the same names , the boundaries of Flintshire and Denbighshire were substantially different from those of the earlier counties . As it happened , the county records for historic Flintshire had been retained at the Hawarden branch of the Clwyd Records Office while those for historic Denbighshire had continued to be held at the Ruthin branch , so there was no problem in segregating the records . 
