The coefficient of friction for any specific material, including Filled United Kingdoms Burnt Heather Slate tiles, can vary depending on the specific conditions, such as the surface finish and the presence of any coatings.

To determine the coefficient of friction for these tiles, it is recommended to consult the manufacturer or supplier of the tiles who should provide the necessary technical information regarding their products. They should be able to provide specific data on the coefficient of friction for the Filled United Kingdoms Burnt Heather Slate tiles in question.