6-K

QuickLinks -- Click here to rapidly navigate through this document

OMB APPROVALOMB Number:        3235-0116
Expires: August 31, 2005
Estimated average burden hours per response: 6.00

FORM 6-K
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

Report of Foreign Private Issuer

Pursuant to Rule 13a-16 or 15d-16
of the Securities Exchange Act of 1934

For the month of April, 2003

Commission File Number: 0-28800

Durban Roodepoort Deep, Limited
(Translation of registrant's name into English)

45 Empire Road, Parktown, South Africa
(Address of principal executive offices)

        Indicate by check mark whether the registrant files or will file annual reports under cover Form 20-F or Form 40-F.  o

Form 20-F  ý Form 40-F  o

        Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1):  o

        Note:    Regulation S-T Rule 101(b)(1) only permits the submission in paper of a Form 6-K if submitted solely to provide an attached annual report to security holders.

        Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7):  o

        Note:    Regulation S-T Rule 101(b)(7) only permits the submission in paper of a Form 6-K if submitted to furnish a report or other document that the registrant foreign private issuer must furnish and make public under the laws of the jurisdiction in which the registrant is incorporated, domiciled or legally organized (the registrant's "home country"), or under the rules of the home country exchange on which the registrant's securities are traded, as long as the report or other document is not a press release, is not required to be and has not been distributed to the registrant's security holders, and, if discussing a material event, has already been the subject of a Form 6-K submission or other Commission filing on EDGAR.

        Indicate by check mark whether by furnishing the information contained in this Form, the registrant is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.

Yes  o No  ý

        If "Yes" is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b): 82-            

        Attached to the Registrant's Form 6-K Filing for the month of April 2003, and incorporated by reference herein, are:

Exhibit No.	Description
1.	News Release entitled "DRD to take Legal Action Against Former Company Secretary," dated March 19, 2003.
2.	Announcement in response to questions raised by the JSE Securities Exchange South Africa, dated March 19, 2003.
3.	News Release entitled "Production at ERPM Returns to Normal," dated March 31, 2002.
4.	News Release entitled "DRD takes further Legal Proceedings Against Former CFO," dated March 31, 2002.

2

SIGNATURES

        Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this Report to be signed on its behalf by the undersigned, thereunto duly authorized.

DURBAN ROODEPOORT DEEP, LIMITED
By:	IAN L. MURRAY
	Ian L. Murray Deputy Chief Executive Officer

Dated: April 8, 2003

3

QuickLinks

SIGNATURES

EX-1

QuickLinks -- Click here to rapidly navigate through this document

Exhibit 1

19 March 2003

194/03—jmd

For immediate release

DRD TO TAKE LEGAL ACTION AGAINST FORMER COMPANY SECRETARY

        Durban Roodepoort Deep, Limited, through its legal advisors, has notified its former company secretary, Maryna Eloff, who resigned last week, that the company intends to institute action for damages against her, consequent upon allegations contained in her resignation letter.

        The full text of a letter from DRD's legal advisors, Bowman Gilfillan, delivered to Ms Eloff today (Wednesday, 19 March) is as follows:

Dear Madam,

OUR CLIENTS: DURBAN ROODEPOORT DEEP, LIMITED and MR M WELLESLEY-WOOD

1.

As you know, we represent Durban Roodepoort Deep, Limited ("DRD") and Mr M Wellesley-Wood.

2.

We have been instructed to record certain matters in response to your letter to our clients dated 13 March 2003. In doing so we will not deal with every allegation in your letter and our failure to do so is not to be construed as an admission of any kind.

3.

Not only are our clients astounded at the contents of your letter, but they are extremely angry. Both the content of the letter and the fact that you simultaneously distributed it to the media and to the JSE are maliciously designed to cause our clients maximum harm. The letter even goes so far as to defame, by innuendo, other senior people involved with DRD.

4.

We have been instructed that the allegations made in the letter about our clients are untrue and have been dishonestly made. We mention the following:

4.1

As you very well know, AIN was engaged by DRD at a time when DRD had received reports from various senior employees that they were under threat from an unknown source. DRD had a grave concern that its security had been severely compromised. You will recall that a

security person was assigned to you at your request. There is accordingly no truth in your suggestions that security personnel were foisted on you or your family.

4.2

DRD never instructed AIN, or any other person, to investigate you or to obtain information about you through illegal means. DRD is aware, on the other hand, of the obtaining of information about you by illegal means at the instance of the Kebble family. DRD is in possession of an affidavit by a private investigator which states that the private investigator was instructed to obtain your bank statements and in fact did so. The affidavit further confirms that the private investigator was informed that the client for whom these bank statements were being procured was "Mr Kebble".



4.3

You also know very well that your so-called concerns about "insider trading at DRD" are unfounded and untrue. Clearly these allegations were made and forwarded to the media and the JSE to cause DRD maximum embarrassment. DRD has met with the JSE and has given all the assurances required by the JSE. We attach the DRD statement on SENS today which is self explanatory.

5.

You have made reference to your "loyalty" to DRD and that you were prepared to continue your work until the Anton Piller order was served on DRD. The order was served on 20 February 2003. Despite this you only delivered your letter on 13 March 2003 and at the same time forwarded it to the media and the JSE. More than coincidentally Mr Brett Kebble appeared on Classic Radio shortly after the delivery of your letter and stated that you had spoken to his investigators. This all indicates a well-orchestrated and coordinated plan to embarrass and harm our clients. The circumstances under which your letter was written and the degree to which you acted independently, if at all, will be thoroughly investigated.

6.

Our clients deny that you were constructively dismissed for the reasons you have alleged or for any other reason. Any proceedings instituted by you will be opposed by DRD and, in view of the dishonesty of your allegations, DRD would seek a special costs order against you.

7.

Your letter is highly defamatory of our clients. Apart from suffering the usual damages arising out of defamation, it may well be that DRD has suffered actual financial loss due to the effect which your letter has had on various negotiations. Our instructions are to institute action against you for damages and this will occur once they have been calculated.

8.

All our clients' rights are reserved.

Queries:	Ilja Graulich, Durban Roodepoort Deep, Limited +27 11 381 7800 (office) +27 83 604 0820 (mobile)
	James Duncan, Russell & Associates +27 11 880 3924 (office) +27 82 892 8052 (mobile)

2

QuickLinks

DRD TO TAKE LEGAL ACTION AGAINST FORMER COMPANY SECRETARY

EX-2

QuickLinks -- Click here to rapidly navigate through this document

Exhibit 2

19 March 2003

192/03—jmd

For immediate release

Announcement

In response to questions raised by the JSE Securities Exchange South Africa ("the JSE") at a meeting held on Tuesday, 18 March 2003, the company wishes to state the following:

        DRD confirms that the March quarterly results, due for release at the end of April, will be affected by the strengthening of the South African Rand against the US Dollar and, to a lesser degree, by the four-week fire at the company's 40% held ERPM gold mine. An announcement with regard to the fire was published on the JSE's Securities Exchange News Service ("SENS") on Tuesday, 4 February 2003.

The company is unaware of any other material issues, specifically any abnormal operational issues or price sensitive "illegalities' as alleged in a letter by Mrs Maryna Eloff dated 13 March 2003.

On the issue of share trading by officers of the company, it states the following:

Details of all of the trades by directors of DRD alluded to by Mrs Eloff were published on SENS within the time period stipulated by the Listings Requirements of the JSE. The company has specified closed periods, as stated in the annual report. These closed periods apply to all employees.

The trades referred to relate to the exercising of options, as part of the company's approved share option scheme, as well as the selling of shares held beneficially by some of DRD's directors.

The trades were undertaken in a personal capacity, but relate mostly to the provision of funds for the payment of provisional tax for the fiscal year of 2002/2003. All trades took place in an open period and do not relate to any operational issues.

1

In line with the company's share option scheme, as approved by shareholders, the company wishes to state that share options are granted to all qualifying employees, including non-executive directors, twice a year, the last allocation of which occurred in October 2002.

Queries:	Ilja Graulich, Durban Roodepoort Deep, Limited +27 11 381 7800 (office) +27 83 604 0820 (mobile)
	James Duncan, Russell & Associates +27 11 880 3924 (office) +27 82 892 8052 (mobile)

This news release includes forward-looking statements that involve risks and uncertainties. Although the Company believes such statements are reasonable, it can make no assurance that such statements will prove to be correct. Such statements are subject to certain factors that may cause results to differ materially from the forward-looking statements. Such factors include the risk factors discussed in the Company's most recent Annual Report on Form 20-F filed with the US Securities and Exchange Commission, a copy of which may be obtained from the Company without charge. The Company undertakes no obligation to publicly release results of any of these forward-looking statements to reflect events or circumstances after the date hereof or to reflect the occurrence of unexpected results.

2

QuickLinks

Announcement

EX-3

Exhibit 3

31 March 2003

204/03—jmd

Embargo: For immediate release

PRODUCTION AT ERPM RETURNS TO NORMAL

Durban Roodepoort Deep, Limited refers to the following announcement made today (Monday, 31 March, 2003) by Crown Gold Recoveries (CGR), regarding the underground fire at the Far East Vertical Shaft of CGR's ERPM Mine:

Access to the last of the underground workings affected by the underground fire at ERPM's Far East Vertical Shaft has now been re-established.

The fire started on 1 February on the 70West longwall following a normal blast. While the precise cause of the fire has not yet been determined, there is evidence that it was premeditated.

A total of 226 proto teams were involved in extinguishing the fire, which makes it one of the largest proto team callouts in South African mining history. The estimated cost of the fire to Crown Gold Recoveries was R15.2 million.. A total of 130kgs of gold production were lost.

Gold production is recovering. Production for the month of March was 190 kgs compared with 220 kgs in January.

1

ERPM is a wholly owned subsidiary of Crown Gold Recoveries, a BEE joint venture between Khumo Bathong Holdings (60%) and Durban Roodepoort Deep (40% + operatorship).

Queries:	Ilja Graulich, Durban Roodepoort Deep, Limited
	+27 11 381 7826 (office)
	+27 83 604 0820 (mobile)
	James Duncan, Russell & Associates
	+27 11 880 3924 (office)
	+27 82 892 8052 (mobile)

2

EX-4

QuickLinks -- Click here to rapidly navigate through this document

Exhibit 4

31 March 2003

201/03—jmd

For immediate release

DRD TAKES FURTHER LEGAL PROCEEDINGS AGAINST FORMER CFO

        Durban Roodepoort Deep, Ltd (JSE: DUR; ASX: DRD) has taken further steps in its ongoing recovery of funds misappropriated from the group during the 2000 financial year.

        DRD has begun two more sets of proceedings against Mr Charles Mostert, former Chief Financial Officer and head of its Australasian operations.

        The Supreme Court of Western Australia proceedings relate to three payments that Mr Mostert caused DRD subsidiaries to make:

•

A$442,000 paid to Cartier Management Pty Ltd;



•

A$260,000 paid to Goldspark Ltd; and



•

US$200,000 paid to Transit Securities Inc.

        DRD believes that the group received nothing in return for any of these payments, and that Mr Mostert acted in breach of his director's duties when he caused them to be made.

        DRD is seeking compensation from Mr Mostert for its loss, being the amounts paid out together with interest and costs.

        DRD Chairman and Chief Executive Officer Mark Wellesley Wood said that DRD had already recouped several million dollars from the recovery process.

        "DRD is attempting to recover more than A$1 million from Mr Mostert in these proceedings alone.

1

        "The payments involved are representative of the types of transactions at which DRD's recovery process is aimed," Mr Wellesley Wood said.

        DRD has already instituted separate proceedings in the Supreme Court of Western Australia against Mr Mostert, Mr John Stratton and other parties.

        DRD anticipates instituting further proceedings in the near future in relation to the Rawas transaction against these and other parties in both South Africa and Australia.

Queries:	Ilja Graulich, Durban Roodepoort Deep, Limited +27 11 381 7800 (office) +27 83 604 0820 (mobile)
	James Duncan, Russell & Associates +27 11 880 3924 (office) +27 82 892 8052 (mobile)
	Paul Downie, Porter Novelli (Perth) +61 8 9386 1233 (office) +61 414 947 129 (mobile)

2

QuickLinks

DRD TAKES FURTHER LEGAL PROCEEDINGS AGAINST FORMER CFO