Block Listing Six Monthly Return

Name of applicant:

Scottish and Southern Energy plc

Name of scheme:

SAYE Sharesave Scheme

Period of return:

From:

1 March 2010

To:

31 August 2010

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

81,145

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):

0

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

35,777

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

45,368

Name of contact:

Yvonne Taylor-Robertson

Telephone number of contact:

01738 456839