Name
- Coles, H. V., Secretary, Merthyr Tydvil Trades Council1
- Collins, Albert, trade union official1
- Collins, J. E., Secretary, Labour Protection League1
- Congreve, William, 2nd Baronet, MP1
- Connellan, O., Secretary, Leeds Trades and Labour Council1
- Curran, Peter, afterwards MP1
- Debenham, Frank, politician and businessman, 1837-19171
- Dew, George, secretary of the London Building Trade Committee and correspondent of John Burns, fl 1892-19051
- Dickinson, Willoughby Hyett, 1st Baron Dickinson, politician, 1859-19431
- Dietloff, P, trade union official and correspondent of John Burns, fl 18921
- Dilke, Charles Wentworth, 2nd Baronet, writer and politician, 1843-19111
- Dipper, A T, trade union official and correspondent of John Burns, fl 1892-18951
- Doyle, Henry Martin, surgeon and politician, 1859-19291
- Drummond, J, of Limehouse, policeman and correspondent of John Burns, fl 18921
- Duffey, John, trade union official, fl 1891-18941
- Duneka, Frederick A, journalist, d 19191
- Duxbury, Christopher J, of Darwen, weaver and correspondent of John Burns, fl 18921
- Dyer, Thomas W, trade union official, fl 18921
- Edwards, Allen Clement, politician, barrister, trade union activist and journalist, 1869-19381
- Edwards, Eustace Gresley, Major; RA; of Dover1