Blocklisting Interim Review

Name of applicant:

PENNON GROUP PLC

Name of scheme:

PENNON GROUP SHARESAVE SCHEME, PERFORMANCE AND CO-INVESTMENT PLAN & ANNUAL INCENTIVE BONUS PLAN

Period of return:

From:

01/02/15

To:

31/07/15

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):

175,990 - Allocated from shares held in Treasury

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

354,465

Name of contact:

K Gale - Assistant Company Secretary

Telephone number of contact:

01392 443060