Posting of AR&A and Notice of AGM

SDI Group plc

("SDI", the "Company" or the "Group")

Posting of Annual Report & Accounts and Notice of AGM

Investor Meet Company Q&A

SDI Group plc, the AIM quoted Group focused on the design and manufacture of scientific and technology products for use in digital imaging and sensing control applications, announces that it has posted to shareholders the Annual Report & Accounts for the year ended 30 April 2020 as well as a notice of the Annual General Meeting ("AGM").

A copy of the Annual Report & Accounts and the notice of AGM will shortly be available on the Company's website at www.thesdigroup.net/investors/reports-presentations/.

The AGM will be held at the Quy Mill Hotel, Church Rd, Cambridge CB25 9AF on 23 September 2020 at 11.00 am. In light of the government's ongoing response to the COVID-19 outbreak the Company requests all Shareholders to submit their Form of Proxy and not to attend the meeting in person. The AGM will be run as a closed meeting and only essential personnel from the Company will attend.

All Shareholders are requested not travel to participate in the meeting in person however Shareholders may listen to the formal AGM proceedings via the digital platform, Investor Meet Company ("IMC"). This will not constitute attendance at the AGM and Shareholders will not be able to vote. The Company is committed to ensuring that there are appropriate communication structures for all elements of its shareholder base so that its strategy, business model and performance are clearly understood and will therefore hold a Q&A session via the IMC platform immediately following the formal business of the AGM. Investors can sign up to Investor Meet Company without charge and add to meet SDI Group plc via: www.investormeetcompany.com/sdi-group-plc/register-investor.

The online meeting and Q&A are open to all existing and potential shareholders but Shareholders are reminded that this will not constitute attendance at the AGM and Shareholders will not be able to vote on the day. Questions can be submitted pre-event via your IMC dashboard or any time during the session via the "Ask a Question" function. Although the Company may not be in a position to answer every question it receives, it will address the most prominent within the confines of information already disclosed to the market. Responses to the Q&A from the live presentation will be published at the earliest opportunity on the Investor Meet Company platform.

Investor feedback can also be submitted directly to management post-event to ensure the Company can understand the views of all elements of its shareholder base.

Investors who have already registered and added to meet the Company will be automatically invited.

FOR FURTHER INFORMATION

About SDI Group plc:

SDI designs and manufactures scientific and technology products for use in digital imaging and sensing and control applications including life sciences, healthcare, astronomy, manufacturing, precision optics and art conservation. SDI operates through its company divisions: Atik Cameras, Synoptics, Graticules Optics, Sentek, Astles Control Systems, Applied Thermal Control, MPB Industries and Chell Instruments.

SDI continues to grow by developing its own technology advancements and by improving its global sales channels, as well as through pursuing strategic, complementary acquisitions.