    <SEC-DOCUMENT>0001104659-21-125321-index.html : 20211012
    <SEC-HEADER>0001104659-21-125321.hdr.sgml : 20211012
    <ACCEPTANCE-DATETIME>20211012161600
    ACCESSION NUMBER:		0001104659-21-125321
    CONFORMED SUBMISSION TYPE:	424B3
    PUBLIC DOCUMENT COUNT:		3
    FILED AS OF DATE:		20211012
    DATE AS OF CHANGE:		20211012

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			Arqit Quantum Inc.
    		CENTRAL INDEX KEY:			0001859690
    		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-PREPACKAGED SOFTWARE [7372]
    		IRS NUMBER:				000000000
    		STATE OF INCORPORATION:			E9
    		FISCAL YEAR END:			0930

    	FILING VALUES:
    		FORM TYPE:		424B3
    		SEC ACT:		1933 Act
    		SEC FILE NUMBER:	333-259982
    		FILM NUMBER:		211318757

    	BUSINESS ADDRESS:
    		STREET 1:		3 MORE LONDON RIVERSIDE
    		STREET 2:		1ST FLOOR
    		CITY:			LONDON
    		STATE:			X0
    		ZIP:			SE1 2RE
    		BUSINESS PHONE:		44 203 91 70155

    	MAIL ADDRESS:
    		STREET 1:		3 MORE LONDON RIVERSIDE
    		STREET 2:		1ST FLOOR
    		CITY:			LONDON
    		STATE:			X0
    		ZIP:			SE1 2RE
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>424B3
    <SEQUENCE>1
    <FILENAME>tm2127896-6_424b3.htm
    <DESCRIPTION>424B3
    <TEXT>
    Document 1 - file: tm2127896-6_424b3.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>2
    <FILENAME>tm2127896d1-bc_total4c.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 2 - file: tm2127896d1-bc_total4c.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>3
    <FILENAME>tm2127896d1-tbl_arqits4clr.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 3 - file: tm2127896d1-tbl_arqits4clr.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>