-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
 MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen
 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 MQdwHFzLjvxvjS1YhdJ6fyw9RpUUn665v3hHXkQlXWafDaKmhK1VG95d83cH2jE+
 887CWjvloS1m4fTdhC0PFQ==

<SEC-DOCUMENT>0001181431-06-014713.txt : 20060228
<SEC-HEADER>0001181431-06-014713.hdr.sgml : 20060228
<ACCEPTANCE-DATETIME>20060228064841
ACCESSION NUMBER:		0001181431-06-014713
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20060228
FILED AS OF DATE:		20060228
DATE AS OF CHANGE:		20060228

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			INNOSPEC INC.
		CENTRAL INDEX KEY:			0001054905
		STANDARD INDUSTRIAL CLASSIFICATION:	CHEMICALS & ALLIED PRODUCTS [2800]
		IRS NUMBER:				981081725
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		INNOSPEC MANUFACTURING PARK
		STREET 2:		PO BOX 17, ELLESMERE PORT
		CITY:			CHESHIRE
		STATE:			X0
		ZIP:			CH65 4HF
		BUSINESS PHONE:		01144151348 5825

	MAIL ADDRESS:	
		STREET 1:		INNOSPEC MANUFACTURING PARK
		STREET 2:		PO BOX 17, ELLESMERE PORT
		CITY:			CHESHIRE
		STATE:			X0
		ZIP:			CH65 4HF

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	OCTEL CORP
		DATE OF NAME CHANGE:	19980209

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Dawson William Martin
		CENTRAL INDEX KEY:			0001323140

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-13879
		FILM NUMBER:		06648477

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		151 350 6977

	MAIL ADDRESS:	
		STREET 1:		59 NEW ROAD
		STREET 2:		RUSCOMBE, READING
		CITY:			BERKSHIRE
		STATE:			X0
		ZIP:			RG10 9LN
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>rrd109604.xml
<DESCRIPTION>FORM 4 - 28 FEB 06 - M DAWSON
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2006-02-28</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001054905</issuerCik>
        <issuerName>INNOSPEC INC.</issuerName>
        <issuerTradingSymbol>IOP</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001323140</rptOwnerCik>
            <rptOwnerName>Dawson William Martin</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>59 NEW ROAD</rptOwnerStreet1>
            <rptOwnerStreet2>RUSCOMBE, READING</rptOwnerStreet2>
            <rptOwnerCity>BERKSHIRE</rptOwnerCity>
            <rptOwnerState>X0</rptOwnerState>
            <rptOwnerZipCode>RG10 9LN</rptOwnerZipCode>
            <rptOwnerStateDescription>UNITED KINGDOM</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Exec VP Performance Chemicals</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>OPTIONS</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>0.00</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2006-02-28</value>
            </transactionDate>
            <deemedExecutionDate>
                <value>2006-02-28</value>
            </deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>509</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2009-02-28</value>
            </exerciseDate>
            <expirationDate>
                <value>2016-02-28</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>COMMON STOCK</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>509</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>11129</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <ownerSignature>
        <signatureName>bannisterj@octel-corp.com</signatureName>
        <signatureDate>2006-02-28</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----