"Coal Hill School tie"@en . "By the 21st century, the Coal Hill School tie was worn only by students as part of the uniform, and the colours changed to equally thick silver-white and blue stripes. (TV: The Caretaker)"@en . . "By the 21st century, the Coal Hill School tie was worn only by students as part of the uniform, and the colours changed to equally thick silver-white and blue stripes. (TV: The Caretaker)"@en . .