-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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<SEC-DOCUMENT>0001140361-08-018559.txt : 20080807
<SEC-HEADER>0001140361-08-018559.hdr.sgml : 20080807
<ACCEPTANCE-DATETIME>20080807152950
ACCESSION NUMBER:		0001140361-08-018559
CONFORMED SUBMISSION TYPE:	4/A
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20080702
FILED AS OF DATE:		20080807
DATE AS OF CHANGE:		20080807

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			VALIDUS HOLDINGS LTD
		CENTRAL INDEX KEY:			0001348259
		STANDARD INDUSTRIAL CLASSIFICATION:	FIRE, MARINE & CASUALTY INSURANCE [6331]
		IRS NUMBER:				000000000

	BUSINESS ADDRESS:	
		STREET 1:		19 PAR-LA-VILLE ROAD
		CITY:			HAMILTON HM11 BERMUDA
		STATE:			D0
		ZIP:			00000
		BUSINESS PHONE:		441-278-9000

	MAIL ADDRESS:	
		STREET 1:		19 PAR-LA-VILLE ROAD
		CITY:			HAMILTON HM11 BERMUDA
		STATE:			D0
		ZIP:			00000

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Bonvarlet Gilles A.M.
		CENTRAL INDEX KEY:			0001428533

	FILING VALUES:
		FORM TYPE:		4/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-33606
		FILM NUMBER:		08998284

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		441-278-9000

	MAIL ADDRESS:	
		STREET 1:		C/O VALIDUS HOLDINGS, LTD., SUITE 1790
		STREET 2:		48 PAR-LA-VILLE ROAD
		CITY:			HAMILTON HM11
		STATE:			D0
		ZIP:			00000
</SEC-HEADER>
<DOCUMENT>
<TYPE>4/A
<SEQUENCE>1
<FILENAME>doc1.xml
<DESCRIPTION>FORM 4/A
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4/A</documentType>

    <periodOfReport>2008-07-02</periodOfReport>

    <dateOfOriginalSubmission>2008-07-07</dateOfOriginalSubmission>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001348259</issuerCik>
        <issuerName>VALIDUS HOLDINGS LTD</issuerName>
        <issuerTradingSymbol>VR</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001428533</rptOwnerCik>
            <rptOwnerName>Bonvarlet Gilles A.M.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O VALIDUS HOLDINGS, LTD.</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 1790, 48 PAR-LA-VILLE ROAD</rptOwnerStreet2>
            <rptOwnerCity>HAMILTON</rptOwnerCity>
            <rptOwnerState>D0</rptOwnerState>
            <rptOwnerZipCode>HM11</rptOwnerZipCode>
            <rptOwnerStateDescription>BERMUDA</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>COO of Talbot Holdings Ltd.</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Shares</value>
            </securityTitle>
            <transactionDate>
                <value>2008-07-02</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>F</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>11141</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>21.44</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>130424</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">The transaction code was incorrect on the reporting person's Form 4 filed on July 7, 2008.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ John Schuster, as attorney-in-fact</signatureName>
        <signatureDate>2008-08-07</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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