A Cumbria Fire and Rescue Service (CFRS) spokesperson confirmed that the probe is ongoing this morning, following the blaze at Armathwaite Castle. The scale of the damage at Armathwaite Castle, following the fire. Fire and Rescue Service personnel used the River Eden, which flows below the property, to extinguish the blaze, utilising portable pumps. Fire service personnel were forced to tackle the fire from the external grounds of the property due to concerns about its structural integrity. Parts of Armathwaite Castle date back to the 15th century, it was extended to a sprawling country home with extensions in the 17th and 18th century.