All online questionnaires must be completed by midnight, Monday 9 October.
More than 400 letters have been sent to those selected to appear in the PRWeek PowerBook, with an email reminder sent out earlier this week.
Those invited to appear in the book include blue-chip comms directors, public sector PR chiefs, influential consultants, political aides and celebrity publicists.
The book is scheduled to be published at the end of this year. Any problems in completing your questionnaire, please contact: firstname.lastname@example.org.