The signal box is a Grade II listed building due to it being the only existing example of its kind .
Although the line reopened to passengers in 2005 , Aberthaw remains closed except for its signal box , which controls access to Aberthaw Power Station .
The signal box is a Grade II listed building due to Aberthaw being the only existing example of Aberthaw 's kind .
Although the line reopened to passengers in 2005 , Aberthaw remains closed except for its signal box , which controls access to Aberthaw Power Station .