A second British bidder surfaced for JWT Group.

London-based Trilateral Communications said it is weighing a bid for JWT, the parent of the J. Walter Thompson advertising agency and the Hill & Knowlton public relations firm. Trilateral said three high-ranking JWT executives approached it about buying the New York-based firm. Meanwhile, JWT told WPP Group, another British suitor, that it would provide it with confidential information under certain conditions. WPP has offered $50.50 a share for the firm.