SPIRENT COMMUNICATIONS PLC revenue for the last year amounted to 429.72 M EUR, the most of which — 255.34 M EUR — came from its highest performing source at the moment, Networks & Security, the year earlier bringing 314.66 M EUR. The greatest contribution to the revenue figure was made by United States — last year it brought SPIRENT COMMUNICATIONS PLC 232.33 M EUR, and the year before that — 291.09 M EUR.