You can apply for a H bar marking online​​​​​​. You will need to register first and then select the link for ‘Access Protection Markings“H” Bars” from the dropdown list.
Gwneir ceisiadau marciau Bar H ar-lein​​​​​​​​​​. Bydd angen i chi gofrestru yn gyntaf, ac yna dewis y ddolen ‘Bariau H Marciau Amddiffyn Mynediad’ o’r rhestr.​