SPIRENT COMMUNICATIONS ORD GBP0.03333 revenue for the last year amounted to 372.58 M GBP, the most of which — 221.39 M GBP — came from its highest performing source at the moment, Networks & Security, the year earlier bringing 278.46 M GBP. The greatest contribution to the revenue figure was made by United States — last year it brought SPIRENT COMMUNICATIONS ORD GBP0.03333 201.44 M GBP, and the year before that — 257.59 M GBP.