EXECUTIVE Councillors are willing to observe rules, soon to be released, requiring the declaration of dealings in the stock market, Senior Executive Councillor Lady Dunn said yesterday. ''All of us recognise, accept, and in fact, we urge that there should be a clear set of rules on how Executive Councillors' interests should be declared and that those rules should be known to the public,'' she said after attending the first council meeting of the new session. She said she observed ''no unwillingness'' among the council's members to follow ''normally practised conventions''. The Government was working on the details of the rules, but they were expected to be available soon. ''We hope to be able to tell you what these rules are very soon.'' Pressure has been mounting for the Government to impose disclosure rules on Executive Councillors' dealings in the stock market. Legislators believe that, in view of the privileged information to which Exco members have access, they should at least disclose their activities in the territory's bourse. A number of Executive Councillors are directors of major listed companies. Sir William Purves is chairman of the Hongkong and Shanghai Banking Corporation, Raymond Ch'ien Kuo-fung is managing director of Lam Soon Hong Kong Group, and Lady Dunn is a director of Swire Pacific, John Swire and Sons, Cathay Pacific Airways and Hongkong Bank. The Financial Secretary, Hamish Macleod, promised in the Legislative Council in May that the administration would re-examine the disclosure rules. Members of the Preliminary Working Committee (PWC) are divided on whether those overseeing the territory's economic affairs should declare their financial interests. As the PWC's economic sub-group will touch on issues including the new airport's financing plan and budget, there was concern members might have a conflict of interest. The sub-group, which meets on Friday and Saturday, will discuss the issue.