T.C.B.S. is an acronym for Tea Club, Barrovian Society. J.R.R. Tolkien and his friends at King Edward's School in Birmingham met regularly at the Barrow Stores, which is where T.C.B.S. got their name. The core members were considered to be the "big four" of Tolkien, Geoffrey Bache Smith, Christopher Wiseman, and Robert Gilson.
The friends continued to stay in contact with each other's literary work until 1916. Sidney Barrowclough and the Payton brothers, Ralph and Wilfrid, were younger than Tolkien and continued it for some time after they left.
- Christopher Wiseman
- Geoffrey Bache Smith
- J.R.R. Tolkien
- Robert Gilson
- Ralph "the Baby" Payton
- Sidney Barrowclough
- Thomas "Tea Cake" Barnsley
- Vincent Trought
- Wilfrid "Whiffy" Payton
- J.R.R. Tolkien; Humphrey Carpenter, Christopher Tolkien (eds.), The Letters of J.R.R. Tolkien, Letter 5, (dated 12 August 1916)
- J.R.R. Tolkien; Humphrey Carpenter, Christopher Tolkien (eds.), The Letters of J.R.R. Tolkien, Letter 350, (dated 24 May 1973)
- John Garth, Tolkien and the Great War, passim.