To ask the Secretary of State for Foreign and Commonwealth Affairs if he will make a statement on the current state of planning for the preparatory conference for the amendment conference of the 1963 partial test ban treaty, to be held in January 1991.

Parties to the partial test ban treaty have agreed that a preliminary meeting will be held in New York from 29 May to 8 June 1990 to address organisational aspects of the amendment conference. Consultations on the details of the meeting are continuing.