RNS Number:2093J
Dimension Data Holdings PLC
26 March 2003



                  Dimension Data Holdings Plc ("the Company")

                    Disclosure of Interest in Share Capital


The Company received notification on 25 March 2003, pursuant to section 198 of
the Companies Act 1985, that as at 21 March 2003, Old Mutual Plc and its direct
and indirect subsidiaries had an interest in 187,283,303 ordinary shares of the
Company representing 13.96 per cent. of the issued share capital. The shares are
registered as follows:


Holder                                                                                    Number of shares

Old Mutual Life Assurance Company (South Africa) Ltd                                            33,410,481

Rodina Investments (Pty) Ltd                                                                     4,945,153

Old Mutual Life Assurance Company (South Africa) Ltd                                               202,958

Old Mutual Life Assurance Company (South Africa) Ltd                                               848,264

Old Mutual Unit Trusts (SA) Limited                                                              1,542,729

Old Mutual Asset Managers (South Africa) (Pty) Ltd (Managed Fund Client Assets)                 16,043,239

Omnibon No 13 (Pty) Limited                                                                        300,000

Old Mutual Life Assurance Company (Namibia) Ltd                                                    180,321

Old Mutual Holdings (Namibia) (Pty) Ltd                                                             58,996

Old Mutual Global Asset Fund                                                                     1,421,696

Old Mutual South Africa Equity Trust Limited                                                     3,784,407

Nedbank Nominees Ltd                                                                             8,518,452

Standard Bank Nominees Ltd                                                                         203,139

Syfrets Securities Nominees (Pty) Ltd                                                            1,138,081

Nedcor Bank Nominees Ltd and Standard Bank Nominees (Pty) Ltd                                    4,895,106

Standard Bank Nominees (Pty) Limited                                                             4,104,571

Marser Nominees (Pty) Limited                                                                       87,992

Nedeurope Limited                                                                              103,134,329

Mutual & Federal Limited                                                                         1,202,880

Mutual & Federal Namibia Limited                                                                   126,840

CGU Insurance                                                                                      370,000

CGU Holdings                                                                                        11,197

Sentrasure                                                                                         180,000

Standard Bank Nominees (Transvaal) (Pty) Limited                                                   523,417

Nominee Accounts                                                                                    49,055



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