RNS Number:8759O
Dimension Data Holdings PLC
20 August 2003


                  Dimension Data Holdings Plc ("the Company")

                    Disclosure of Interest in Share Capital


The Company has received notification, pursuant to section 198 of the Companies
Act 1985, that as at 12 August 2003, Old Mutual Plc and its direct and indirect
subsidiaries had an interest in 159,223,771 ordinary shares of the Company
representing 11.87 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                                            12,813,978
Old Mutual Life Assurance Company (South Africa) Ltd                                               246,458
Old Mutual Life Assurance Company (South Africa) Ltd                                               738,988
Old Mutual Unit Trusts (SA) Limited                                                              2,497,729
Old Mutual Trusts (Namibia)                                                                         55,000
Old Mutual Asset Managers (South Africa) (Pty) Ltd (Managed Fund Client Assets)                 21,802,369
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                                                                             2,995,002
Standard Bank Nominees Ltd                                                                         211,739
Nedcor Bank Nominees Ltd                                                                         1,124,075
Nedcor Bank Nominees Ltd                                                                         1,262,673
Nedcor Bank Nominees Ltd                                                                               715
Nedcor Bank Nominees Ltd                                                                            72,483
Standard Bank Nominees                                                                           3,287,413
BOE Private Clients                                                                                 69,642
Standard Bank Nominees (Pty) Limited                                                               275,871
NIB IPS Nominees (Pty) Ltd                                                                         102,145
Nedeurope Limited                                                                              103,134,329
Mutual & Federal Limited                                                                         1,890,917
Mutual & Federal Namibia Limited                                                                   126,840
CGU Insurance                                                                                      370,000
CGU Holdings                                                                                        11,197
Sentrasure                                                                                         180,000
Standard Bank Nominees (Transvaal) (Pty) Limited                                                   484,368
Gerrard Ltd                                                                                         24,420


                      This information is provided by RNS
            The company news service from the London Stock Exchange
END

HOLPMMBTMMATBPJ