RNS Number:8996P
Dimension Data Holdings PLC
18 September 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 17 September 2003, Old Mutual Plc and its direct and
indirect subsidiaries had an interest in 93,531,876 ordinary shares of the
Company representing 6.97 per cent. of the issued share capital. The shares are
held as follows:


Holder                                                          Number of shares

Old Mutual Asset Managers (South Africa) (Pty) Ltd                     8,314,688

PeregrineQuant (Pty) Ltd (Not an Old Mutual Company)                     246,458

Coronation Fund Managers Ltd (Not an Old Mutual Company)                 610,088

Old Mutual Asset Managers (South Africa) (Pty) Ltd                     2,622,729

Old Mutual Asset Managers (South Africa) (Pty) Ltd                        55,000

Old Mutual Asset Managers (South Africa) (Pty) Ltd                    19,354,512

Old Mutual Asset Managers (Namibia) (Pty) Ltd                            178,221

Old Mutual Asset Managers (Namibia) (Pty) Ltd                             58,996

Old Mutual Asset Managers (Namibia) (Pty) Ltd                            226,000

Old Mutual Asset Managers (Bermuda) Ltd                                1,421,696

Old Mutual Asset Managers (Bermuda) Ltd                                3,784,407

Quantitive Asset Management                                            2,807,602

Quantitive Asset Management                                              211,739

Franklin Templeton/NIB Investments                                       721,640

BOE Private Clients (ntrac)                                            1,203,634

BOE Fiduciary                                                             72,839

Syfrets Securities Nominee Company                                           576

BOE Private Clients                                                    4,007,961

BOE Private Clients                                                       72,913

Nedcor Investment Bank Multi Manager                                     275,871

Nedcor Investment Bank Securities                                        102,145

Nedeurope SA                                                          42,328,090

Mutual & Federal Limited                                               1,890,917

Mutual & Federal Namibia Limited                                         126,840

CGU Insurance                                                            370,000

CGU Holdings                                                              11,197

Sentrasure                                                               180,000

Quaystone Ltd                                                          2,275,117



                      This information is provided by RNS
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