Created in 1993 (United States), Relx ADR own 12 sister brands and 1348 competing brands. Relx ADR is a brand of Relx Plc, listed on the stock exchange of London. The International Securities Identification Number (ISIN) of Relx Plc is GB00B2B0DG97. Relx ADR is part of the Media-Diversified activity sector.