THE ACTELION ANNUAL REPORT 2002
Report of the Group Auditors
To the Annual General Meeting of Actelion Ltd
Allschwil, Switzerland
As auditors of the Group, we have audited the consolidated financial statements (balance sheet, income statement, statement of cash flows, statement of changes in equity and notes) of Actelion Ltd for the year ended December 31, 2002.

These consolidated financial statements are the responsibility of the Board of Directors. Our responsibility is to express an opinion on these consolidated financial statements based on our audit. We confirm that we meet the legal requirements concerning professional qualification and independence.

Our audit was conducted in accordance with auditing standards promulgated by the Swiss profession and with the International Standards on Auditing, which require that an audit be planned and performed to obtain reasonable assurance about whether the consolidated financial statements are free from material misstatement. We have examined on a test basis evidence supporting the amounts and disclosures in the consolidated financial statements. We have also assessed the accounting principles used, significant estimates made and the overall consolidated financial statement presentation. We believe that our audit provides a reasonable basis for our opinion.

In our opinion, the consolidated financial statements give a true and fair view of the financial position, the results of operations and the cash flows in accordance with the International Financial Reporting Standards (IFRS) and comply with Swiss law.

We recommend that the consolidated financial statements submitted to you be approved.



PricewaterhouseCoopers AG
Thomas Brüderlin
Hans-Rudolf Tanner


Basel, February 14, 2003