Block Listing Six Monthly Return

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:

01/07/2011

To:

31/12/2011

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 scheme(s) has been increased since the date of the last return (if any increase has been applied for):

n/a

Less:  Number of securities issued/allotted under scheme(s) during period (see LR3.5.7G):

Nil

Equals:  Balance under scheme(s) not yet issued/allotted at end of period:

2,124,500

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:

01/07/2011

To:

31/12/2011

Balance of unallotted securities under scheme(s) from previous return:

371,500 ordinary 10p shares

Plus:  The amount by which the block scheme(s) has been increased since the date of the last return (if any increase has been applied for):

n/a

Less:  Number of securities issued/allotted under scheme(s) during period (see LR3.5.7G):

nil

Equals:  Balance under scheme(s) not yet issued/allotted at end of period:

371,500 ordinary 10p shares

Name of contact:

Jackie Holman

Telephone number of contact:

020 7616 7575