Exhibit A

                         Explanation of Responses

     This Initial Statement of Beneficial Ownership on Form 3 is being
filed by WPP Group plc, an English public limited company ("WPP") and Abbey
Merger Corproation, a wholly owned subsidiary of WPP ("Merger Sub"). WPP,
Merger Sub, and Grey Global Group Inc. ("Grey") entered into an Agreement
and Plan of Merger (the "Merger Agreement"), dated as of September 11,
2004, providing for, among other things, the merger of Grey with and into
Merger Sub (the "Merger"). As a result of the Merger, Grey will become a
wholly-owned subsidiary of WPP.

     In connection with the Merger Agreement, on September 11, 2004, WPP
and Merger Sub entered into a Voting Agreement (the "Voting Agreement")
with Edward H. Meyer, a stockholder and Chairman, President and Chief
Executive Officer of Grey with respect to 149,518 shares of common stock,
par value $0.01 per share ("Common Stock"), and 135,617 shares of Limited
Duration Class B Stock Common Stock, par value $0.01 per share ("Class B
Stock"), of Grey that he beneficially owns, and options he holds to acquire
50,000 shares of Common Stock (collectively, all such shares, including
shares issued upon exercise of options, the "Grey Subject Shares").
Pursuant to the Voting Agreement, Mr. Meyer has agreed that, during the
period from and including September 11, 2004 through and including the
earliest to occur of (a) the approval and adoption of the Merger Agreement
by the stockholders of Grey and (b) the termination of the Merger Agreement
in accordance with its terms (the "Voting Period"), he will vote or execute
consents (or cause to be voted or a consent to be executed) with respect to
the Grey Subject Shares beneficially owned by him on the applicable record
date, at any meeting or in connection with any proposed action by written
consent of the stockholders of Grey, with respect to any of the following
matters: (1) in favor of the approval and adoption of the Merger Agreement
and the transactions contemplated by the Merger Agreement; and (2) against
(i) any action, proposal, transaction or agreement that would reasonably be
expected to result in a breach of any covenant, representation or warranty
or any other obligation of Grey contained in the Merger Agreement or of Mr.
Meyer contained in the Voting Agreement, (ii) any action, proposal,
transaction or agreement involving Grey that would reasonably be expected
to prevent, impede, frustrate, interfere with, delay, postpone or adversely
affect the Merger and the other transactions contemplated by the Merger
Agreement, (iii) any Acquisition Proposal (as defined in the Voting
Agreement) made prior to the termination of the Merger Agreement (other
than by WPP) and (iv) any amendment to Grey's certificate of incorporation
or by-laws.

     As security for the performance of Mr. Meyer's obligations under the
Voting Agreement, Mr. Meyer irrevocably appointed WPP and any designee
thereof as his proxy and attorney-in-fact, with full power of substitution
and resubstitution, to vote or execute consents during the Voting Period to
the extent provided above.

     Neither the filing of this Form 3 nor any of its contents shall be
deemed to constitute an admission that the Reporting Person is the
beneficial owner of the Grey Subject Shares for purposes of Section 16 of
the Securities Exchange Act of 1934, as amended, or for any other purpose
and such beneficial ownership is expressly disclaimed.