Centricus Acquisition : Arqit appoints Jason Nabi to role of Managing Director, Financial Services

Arqit appoints Jason Nabi to role of

Managing Director, Financial Services

Appointment signals Arqit's push into financial services security

London, UK - 30 September 2021 - Arqit Quantum Inc. ("Arqit"), a leader in quantum encryption technology, is pleased to announce the appointment of Jason Nabi as Managing Director, Financial Services, with immediate effect.

As a 30-year veteran in Capital Markets and the Fintech sectors, Jason has held leadership positions at some of the world's largest banks, including HSBC and BNP Paribas, and has worked for other market leaders, including Bloomberg, IBM and blockchain firm Paxos.

Jason has extensive experience developing services, delivering growth and innovative technology-based solutions, including digital assets. He is the founding member of the Global Blockchain Business Council, a recent board member of ISSA as well as a frequent speaker on digitalisation of capital markets.

Arqit Founder, Chairman and CEO David Williams, said: "QuantumCloud™ has already solved some of the greatest cyber security problems of the era and has proven that with major customers in defence and telecoms. We are now certain of its universal application and demand in financial services.

"We are thrilled to have Jason join our company to build a high-performance team to drive our Financial Services division and capitalise on the massive unmet demand not only for stronger, simpler encryption but also in the value-added services we are building."

Jason Nabi added: "Joining Arqit's world class team of experts in quantum tech and cybersecurity is a real honour. The financial services move to digital assets and take-up of investing in crypto is evidenced everywhere. For every financial services firm and institution, the protection of client data, surety of transactions and safety of assets in a digital ecosystem needs Stronger, Simpler Encryption.

"In fact, the digital assets boom will not last unless the cryptographic problem at their heart is solved. Arqit has done this and is already the market leader in this field with an impressive array of customers and I'm excited to help lead the growth and development of the business in the Financial Services sector".

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Registered number: 10544841. Registered Office: 3 More London Riverside London SE1 2RE | Proprietary and Confidential

About Arqit

Arqit supplies a unique quantum encryption Platform-as-a-Service which makes the communications links of any networked device secure against current and future forms of attack - even from a quantum computer. Arqit's product, QuantumCloud™, enables any device to download a lightweight software agent of less than 200 lines of code, which can create encryption keys in partnership with any other device. The keys are computationally secure, one-time use and zero trust. QuantumCloud™ can create limitless volumes of keys in limitless group sizes and can regulate the secure entrance and exit of a device in a group. The addressable market for QuantumCloud™ is every connected device.

On 7 September 2021, Arqit completed its business combination with Centricus Acquisition Corp. ("Centricus") a special purpose acquisition company. The combined company has retained the name Arqit Quantum Inc. Arqit trades on Nasdaq under the ticker symbols "ARQQ" and "ARQQW".

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Registered number: 10544841. Registered Office: 3 More London Riverside London SE1 2RE | Proprietary and Confidential

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Caution About Forward-Looking Statements

This communication includes forward-looking statements. These forward-looking statements are based on Arqit's expectations and beliefs concerning future events and involve risks and uncertainties that may cause actual results to differ materially from current expectations. These factors are difficult to predict accurately and may be beyond Arqit's control. Forward - looking statements in this communication or elsewhere speak only as of the date made. New uncertainties and risks arise from time to time, and it is impossible for Arqit to predict these events or how they may affect it. Except as required by law, Arqit does not have any duty to, and does not intend to, update or revise the forward-looking statements in this communication or elsewhere after the date this communication is issued. In light of these risks and uncertainties, investors should keep in mind that results, events or developments discussed in any forward-looking statement made in this communication may not occur. Uncertainties and risk factors that could affect Arqit's future performance and cause results to differ from the forward-looking statements in this release include, but are not limited to: (i) risks that the business combination disrupts Arqit's current plans and operations, (ii) the outcome of any legal proceedings that may be instituted against the Arqit related to the business combination,

1. the ability to maintain the listing of Arqit's securities on a national securities exchange, (iv) changes in the competitive and regulated industries in which Arqit operates, variations in operating performance across competitors, changes in laws and regulations affecting Arqit's business and changes in the combined capital structure, (v) the ability to implement business plans, forecasts, and other expectations after the completion of the business combination, and identify and realize additional opportunities, (vi) the potential inability of Arqit to convert its pipeline or orders in backlog into revenue, (vii) the potential inability of Arqit to successfully deliver its operational technology which is still in development, (viii) the risk of interruption or failure of Arqit's information technology and communications system, (ix) the enforceability of Arqit's intellectual property, and (x) other risks and uncertainties set forth in the sections entitled "Risk Factors" and "Cautionary Note Regarding Forward-Looking Statements" in Arqit's final prospectus relating to its business combination filed with the U.S. Securities and Exchange Commission (the "SEC") on July 30, 2021 and in subsequent filings with the SEC. While the list of factors discussed above and the list of factors presented in the final prospectus are considered representative, no such list should be considered to be a complete statement of all potential risks and uncertainties. Unlisted factors may present significant additional obstacles to the realization of forward-looking statements.

Registered number: 10544841. Registered Office: 3 More London Riverside London SE1 2RE | Proprietary and Confidential

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