LONMIN PLC

20 OCTOBER 1999

LONMIN PLC HAS TODAY BEEN NOTIFIED BY MERCURY ASSET MANAGEMENT LIMITED (MAM) OF
33 KING WILLIAM STREET, LONDON EC4R 9AS IN ACCORDANCE WITH SECTIONS 198-202 (AS
AMENDED) OF THE COMPANIES ACT 1985 THAT THERE HAS BEEN A CHANGE OF

CIRCUMSTANCES AFFECTING THE INTERESTS WHICH MAM DISCLOSED TO THE COMPANY ON 24
AUGUST 1999 AND THAT MAM NOW HAS A DISCLOSABLE INTEREST IN 22,423,420 ORDINARY
SHARES OF GBP1 EACH OF THE COMPANY (REPRESENTING 14.05 PER CENT OF THE ISSUED
SHARE CAPITAL) AS DETAILED BELOW. SAVE WHERE SPECIFICALLY IDENTIFIED TO THE
CONTRARY SUCH INTERESTS ARISE BY REASON OF DISCRETIONARY INVESTMENT MANAGEMENT
ARRANGEMENTS ENTERED INTO BY MAM OR BY ITS AFFILIATES IN THE MERCURY ASSET
MANAGEMENT GROUP. EACH SUCH AFFILIATE IS INTERESTED IN THE RELEVANT SHARE
CAPITAL TO THE EXTENT SET OUT BELOW AND WHERE APPLICABLE THE NOTIFICATION
CONSTITUTES DISCLOSURE ON BEHALF OF SUCH AFFILIATES.

REGISTERED HOLDER                     NO OF SHARES         BENEFICIAL

(IF KNOWN)                                                 INTERESTS

                                                           (YES/NO)

NUTRACO NOMINEES LIMITED              16,565,273           NO
(DESIGNATED & UNDESIGNATED)

MERCURY LIFE NOMINEES LIMITED         264,128              YES
A/C NONCERT

NORTRUST NOMINEES LIMITED             1,190,500            NO

CHASE NOMINEES LIMITED                2,683,453            NO

OTHER NAMES                           1,720,066            NO
TOTAL                                 22,423,420