Spirent

Spirent Communications plc
Company type	Public
Traded as	LSE: SPT; FTSE 250 component;
Industry	Telecommunications
Founded	1936
Headquarters	Crawley, West Sussex, United Kingdom (corporate); San Jose, California, United States (operational);
Key people	Bill Thomas (chairman); Eric Updyke (CEO); Paula Bell (CFO);
Products	Network diagnostics
Revenue	US$460.2 million (2024)
Operating income	US$46.2 million (2024)
Net income	US$12.9 million (2024)
Total assets	US$614.2 million (2024)
Total equity	US$392.5 million (2024)
Number of employees	1,500 (2025)
Website	spirent.com

Spirent Communications plc is a British-American multinational telecommunications testing company headquartered in Crawley, West Sussex, in the United Kingdom. It is listed on the London Stock Exchange and is a constituent of the FTSE 250 Index.