Relx PLC revenue for the last year amounted to 10.57 B EUR, the most of which — 3.61 B EUR — came from its highest performing source at the moment, Risk, the year earlier bringing 3.29 B EUR. The greatest contribution to the revenue figure was made by North America — last year it brought Relx PLC 6.14 B EUR, and the year before that — 5.65 B EUR.