EXHIBIT 23.1 CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We consent to the incorporation by reference in this Registration Statement on Form S-8 of our report dated June 30, 2005, appearing in the Annual Report on Form 20-F of WPP Group plc for the year ended December 31, 2004. /s/ Deloitte & Touche LLP Deloitte & Touche LLP London, England November 10, 2005