SPIRENT COMMUNICATIONS PLC

2022 Annual General Meeting (AGM)

London, UK - 4 May 2022: Spirent Communications plc ("Spirent", the "Company" or the "Group") (LSE: SPT), the leading provider of automated test and assurance solutions for next-generation devices and networks, today announced the following update to arrangements for its 2022 Annual General Meeting ("AGM").

Spirent's AGM will take place at 11.00am on Friday 6 May 2022, as set out in the Notice of AGM published on 30 March 2022.  Shareholders are welcome to attend the 2022 AGM in person and the proceedings of the meeting will also be available via a webcast facility which will offer the ability to ask questions of the Board.  A minimum number of employee shareholders will be present in-person at the 2022 AGM in order to ensure that the meeting is quorate.  Directors will attend the meeting, via the webcast facility where local restrictions have limited international travel, and will be available to respond to shareholder's questions after the business of the meeting has concluded.

For details on how to join the webcast and submit their questions, shareholders should go to the AGM page of the Company's website at https://corporate.spirent.com/shareholder-information/agm

Shareholders should note that they will need their Shareholder Reference Number (printed on Attendance Card section of their personalised Form of Proxy) to join the webcast.

If it is necessary to provide shareholders with further information about the AGM, or notify them about any alternative arrangements, we will do so on our website at https://corporate.spirent.com/ and by announcement via a Regulatory Information Service.

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About Spirent Communications plc

Spirent Communications plc (LSE: SPT) is the leading global provider of automated test and assurance solutions for networks, cybersecurity and positioning. The Company provides innovative products, services and managed solutions that address the test, assurance and automation challenges of a new generation of technologies, including 5G, SD-WAN, Cloud, autonomous vehicles and beyond. From the lab to the real world, Spirent helps companies deliver on their promise to their customers of a new generation of connected devices and technologies. Further information about Spirent Communications plc can be found at https://corporate.spirent.com/.

Spirent Communications plc Ordinary Shares are traded on the London Stock Exchange (ticker: SPT; LEI: 213800HKCUNWP1916L38). The Company operates a Level 1 American Depositary Receipt (ADR) programme with each ADR representing four Spirent Communications plc Ordinary Shares. The ADRs trade in the US over-the-counter (OTC) market under the symbol SPMYY and the CUSIP number is 84856M209. Spirent ADRs are quoted on the Pink OTC Markets electronic quotation service which can be found at https://www.otcmarkets.com/marketplaces/otc-pink.

Spirent and the Spirent logo are trademarks or registered trademarks of Spirent Communications plc. All other trademarks or registered trademarks mentioned herein are held by their respective companies. All rights reserved.

Cautionary statement regarding forward-looking statements

This document may contain forward-looking statements which are made in good faith and are based on current expectations or beliefs, as well as assumptions about future events. You can sometimes, but not always, identify these statements by the use of a date in the future or such words as "will", "anticipate", "estimate", "expect", "project", "intend", "plan", "should", "may", "assume" and other similar words. By their nature, forward-looking statements are inherently predictive and speculative and involve risk and uncertainty because they relate to events and depend on circumstances that will occur in the future. You should not place undue reliance on these forward-looking statements, which are not a guarantee of future performance and are subject to factors that could cause our actual results to differ materially from those expressed or implied by these statements. The Company undertakes no obligation to update any forward-looking statements contained in this document, whether as a result of new information, future events or otherwise.