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    <noticeSignature>
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      <signature>/s/ Gary Redman, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Garth Ritchie</signature>
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144
0001840684
XXXXXXXX
LIVE
0001859690
Arqit Quantum Inc.
001-40777
NOVA NORTH
7 FLOOR, 11 BRESSENDEN PLACE
LONDON
X0
SW1E 5BY
44 203 91 70155
Ritchie Garth
Director
Common
Fidelity Brokerage Services LLC
900 Salem Street
Smithfield
RI
02917
655
832.70
121926166
04/03/2023
NASDAQ
Common
03/31/2023
Restricted Stock Vesting
Issuer
N
655
03/31/2023
Compensation
N
Garth Ritchie
Nova North 7 Floor 11 Bressenden Place
London
X0
SW1E 5BY
Common
01/04/2023
88
263.53
Garth Ritchie
Nova North 7 Floor 11 Bressenden Place
London
X0
SW1E 5BY
Common
01/05/2023
93
266.91
Garth Ritchie
Nova North 7 Floor 11 Bressenden Place
London
X0
SW1E 5BY
Common
01/06/2023
86
232.14
Garth Ritchie
Nova North 7 Floor 11 Bressenden Place
London
X0
SW1E 5BY
Common
01/09/2023
84
248.53
Garth Ritchie
Nova North 7 Floor 11 Bressenden Place
London
X0
SW1E 5BY
Common
01/10/2023
91
231.41
Garth Ritchie
Nova North 7 Floor 11 Bressenden Place
London
X0
SW1E 5BY
Common
01/11/2023
88
226.76
Garth Ritchie
Nova North 7 Floor 11 Bressenden Place
London
X0
SW1E 5BY
Common
01/12/2023
86
216.46
04/03/2023
/s/ Gary Redman, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Garth Ritchie