WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE> UT
<LEGEND>
This schedule contains summary financial information extracted from Southern
Investments UK plc Form 10-K for the twelve months ended March 31, 1999, and is
qualified in its entirety by reference to such financial statements.  Values
are in (pound) sterling.
</LEGEND>
<MULTIPLIER> 1,000,000
<CURRENCY> Pounds Sterling

<S>                        <C>
<PERIOD-TYPE>                                              12-MOS
<FISCAL-YEAR-END>                                     MAR-31-1999
<PERIOD-START>                                         APR-1-1998
<PERIOD-END>                                          MAR-31-1999
<EXCHANGE-RATE>                                            1.6140
<BOOK-VALUE>                                              PER-BOOK
<TOTAL-NET-UTILITY-PLANT>                                   1,286
<OTHER-PROPERTY-AND-INVEST>                                    15
<TOTAL-CURRENT-ASSETS>                                        131
<TOTAL-DEFERRED-CHARGES>                                        0
<OTHER-ASSETS>                                                707
<TOTAL-ASSETS>                                              2,139
<COMMON>                                                        0
<CAPITAL-SURPLUS-PAID-IN>                                     902
<RETAINED-EARNINGS>                                          (146)
<TOTAL-COMMON-STOCKHOLDERS-EQ>                                756
<PREFERRED-MANDATORY>                                          50
<PREFERRED>                                                     0
<LONG-TERM-DEBT-NET>                                          301
<SHORT-TERM-NOTES>                                            305
<LONG-TERM-NOTES-PAYABLE>                                       0
<COMMERCIAL-PAPER-OBLIGATIONS>                                 94
<LONG-TERM-DEBT-CURRENT-PORT>                                   0
<PREFERRED-STOCK-CURRENT>                                       0
<CAPITAL-LEASE-OBLIGATIONS>                                     0
<LEASES-CURRENT>                                                0
<OTHER-ITEMS-CAPITAL-AND-LIAB>                                633
<TOT-CAPITALIZATION-AND-LIAB>                               2,139
<GROSS-OPERATING-REVENUE>                                     261
<OTHER-OPERATING-EXPENSES>                                    139
<TOTAL-OPERATING-EXPENSES>                                    139
<OPERATING-INCOME-LOSS>                                       122
<OTHER-INCOME-NET>                                             19
<INCOME-TAX-EXPENSE>                                           10
<INCOME-BEFORE-INTEREST-EXPEN>                                131
<TOTAL-INTEREST-EXPENSE>                                       55
[INCOME-CONTINUING]                                            76
[DISCONTINUED]                                                 11
<NET-INCOME>                                                   87
<PREFERRED-STOCK-DIVIDENDS>                                     0
<EARNINGS-AVAILABLE-FOR-COMM>                                   0
<COMMON-STOCK-DIVIDENDS>                                       70
<TOTAL-INTEREST-ON-BONDS>                                       0
<CASH-FLOW-OPERATIONS>                                         87
<EPS-BASIC>                                                   0
<EPS-DILUTED>                                                   0





</TABLE>