Heritage Assets SCSp. → Arqit Quantum Inc. ARQQW

Item 4 of the Schedule 13D is amended by adding the following information: This Amendment No. 8 is being filed to update the aggregate number of Ordinary Shares and percentage of Ordinary Shares of Arqit beneficially owned by the Reporting Persons due to the sale by the Reporting Persons of Business Combination Warrants (as defined in Arqit's Annual Report on Form 20-F for the fiscal year ended September 30, 2024, filed with the Securities and Exchange Commission (the "SEC") on December 5, 2024) and Ordinary Shares at the average prices set forth in the table below, in each case in open market transactions, since the date of the filing of Amendment No. 7 to Schedule 13D by the Reporting Persons, on October 20, 2025 ("Amendment No. 7"). The referenced sale of Ordinary Shares resulted in a decrease of over one percent (1%) in the aggregate percentage ownership reported by the Reporting Persons in Amendment No. 7. Date of Transaction Amount of Business Average Price per Combination Warrants Business Combination Warrant ($) 10/16/2025 2,914 14.90 10/17//2025 253 14.70 10/21/2025 438 15.30 10/22/2025 398 14.00 10/23/2025 3,241 14.50 10/24/2025 3,620 17.90 10/27/2025 1,898 19.00 10/28/2025 650 18.80 10/29/2025 133 19.00 10/30/2025 6,070 14.60 10/31/2025 305 15.00 11/3/2025 216 15.10 11/4/2025 28 15.30 11/5/2025 145 14.40 11/6/2025 36 14.40 11/7/2025 631 11.40 11/10/2025 647 10.80 Date of Transaction Amount of Average Price Per Ordinary Shares Ordinary Share ($) 11/4/2025 100,000 36.86 11/5/2025 100,000 34.48 11/10/2025 100,000 32.95