Blocklisting - Interim Review

Block Listing Six Monthly Return Information provided on this form must be typed or printed electronically andprovided to an ris. Date: 2 January 2013 Name of applicant: Keller Group plc Name of scheme: Keller Group plc Approved Company Share Option Plan and Keller Group plc Unapproved Company Share Option Plan Period of return: From: 01/07/2012 To: 31/12/2012 Balance of unallotted securities under scheme(s) from previous return: 2,124,500 ordinary 10p shares outstanding under block listing scheme. (784,000 ordinary 10p shares outstanding under share option plans (of which, 759,000 lapsed)) Plus: The amount by which the block n/a scheme(s) has been increased since the date of the last return (if any increase has been applied for): Less: Number of securities issued/ 16,500 allotted under scheme(s) during period (see LR3.5.7G): Equals: Balance under scheme(s) not 2,108,000 yet issued/allotted at end of period: Name of contact: Jackie Holman Telephone number of contact: 020 7616 7575 Name of applicant: Keller Group plc Name of scheme: Keller Group plc Performance Share Plan Period of return: From: 01/07/2012 To: 31/12/2012

Balance of unallotted securities under 371,500 ordinary 10p shares scheme(s) from previous return:

Plus: The amount by which the block n/a scheme(s) has been increased since the date of the last return (if any increase has been applied for): Less: Number of securities issued/ nil allotted under scheme(s) during period (see LR3.5.7G):

Equals: Balance under scheme(s) not yet 371,500 ordinary 10p shares issued/allotted at end of period:

Name of contact: Jackie Holman Telephone number of contact: 020 7616 7575