Blocklisting Interim Review

Name of applicant:

PENNON GROUP PLC

Name of scheme:

PENNON GROUP SHARESAVE SCHEME, PERFORMANCE AND CO-INVESTMENT PLAN & EXECUTIVE SHARE OPTION SCHEME

Period of return:

From:

30/07/12

To:

31/01/13

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

354,465

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):

1,381,257 - Allocated from shares held in Treasury

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

354,465

Name of contact:

M L Heeley - Assistant Company Secretary

Telephone number of contact:

01392 443060

Name of applicant:

PENNON GROUP PLC

Name of scheme:

PENNON GROUP SCRIP DIVIDEND ALTERNATIVE

Period of return:

From:

01/08/12

To:

31/01/13

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

N/A

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):

920,966

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

920,966

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

NIL

Name of contact:

M L Heeley - Assistant Company Secretary

Telephone number of contact:

01392 443060