Company Announcements

SPIRENT COMMUNICATIONS PLC

2020 Annual General Meeting (AGM)

London, UK - 15 April 2020: Spirent Communications plc ("Spirent", the "Company" or the "Group") (LSE: SPT), a leading test, measurement, analytics and assurance technology company today announced the following update to arrangements for its 2020 Annual General Meeting ("AGM").

Spirent's AGM is due to take place on 29 April 2020.  In accordance with the Company's Articles of Association and given the Covid-19 situation, in particular the compulsory measures (the Stay at Home Measures) published by the Government on 23 March 2020 prohibiting public gatherings of more than two people, regrettably shareholders will not be able to attend the AGM in person.  We will make arrangements to ensure that the legal requirements to hold the meeting can be satisfied and the format of the meeting will be purely functional: the meeting will comprise only the formal votes without any business update.

Shareholders are therefore strongly encouraged to vote on all of the resolutions online or by appointing the Chair of the AGM as a proxy in advance of the meeting (appointing the Chair of the AGM as proxy, rather than another named person, ensures your vote will be counted in the meeting).  Please refer to the Notes on pages 6 and 7 of the Notice of AGM for instructions on how to vote online or by proxy.  Questions can be raised before the meeting by sending them to plc@spirent.com and they will be responded to in writing.  This situation is constantly evolving, and the UK Government may change current restrictions or implement further measures relating to the holding of general meetings during the affected period. 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) offers test, measurement, analytics and assurance solutions for next-generation devices and networks.  Spirent provides products, services and information solutions for high-speed Ethernet, positioning mobile network infrastructure markets, with expanding focus on service assurance, cybersecurity and 5G. Spirent is accelerating the transition of connected devices, network equipment and applications from development labs to the operational network, as it continues to innovate toward fully-automated testing and autonomous service assurance solutions.  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 http://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.