Block listing Interim Review

Name of applicant:

PENNON GROUP PLC

Name of scheme:

PENNON GROUP SHARESAVE SCHEME

Period of return:

From:

01/02/17

To:

31/07/17

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

161,342

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):

NIL

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

28,607

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

132,735

Name of applicant:

PENNON GROUP PLC

Name of scheme:

PENNON GROUP EXECUTIVE SHARE OPTION SCHEME

Period of return:

From:

01/02/17

To:

31/07/17

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

14,663

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):

NIL

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:

14,663

Name of contact:

K Senior - Deputy Company Secretary

Telephone number of contact:

01392 443060