EXHIBIT 21 PRINCIPAL SUBSIDIARY UNDERTAKINGS, ASSOCIATED UNDERTAKINGS AND INVESTMENTS 1. PRINCIPAL SUBSIDIARY UNDERTAKINGS The following table shows Vodafone's principal subsidiary undertakings, being those which are considered by Vodafone to be likely to have a significant effect on the assessment of the assets, liabilities, financial position and/or profits and losses of Vodafone. COUNTRY OF INCORPORATION OR PERCENTAGE NAME REGISTRATION ACTIVITY SHAREHOLDING - ------------------------------------------------------ -------------- --------------------------- --------------- Vodafone UK Limited England Holding company 100 Vodafone Limited England Cellular network operator 100 Vodafone Distribution Limited England Holding company 100 Vodafone Central Services Limited England Provision of customer services 100 Vodafone Corporate Limited England Service provider 100 Vodafone M.C. Mobile Services Limited England Service provider 100 Vodafone Connect Limited England Service provider 100 Vodafone (NI) Limited Northern Ireland Service provider 100 Vodafone Retail (Holdings) Limited England Holding company 100 Vodafone Retail Limited England Holding company 100 Peoples Phone Limited England Service provider 100 Astec Communications Limited England Service provider 100 Vodafone Finance Limited England Financial trading company 100 Vodafone Group Services Limited England Provision of central services 100 Vodafone Paging Limited England Radiopaging network operator 100 Vodafone Satellite Services Limited England Globalstar satellite consortium 100 Vodafone Value Added and Data Services Limited England Supply of value added services and packet radio network operator 100 Vodafone Europe Holdings B.V. Netherlands Holding company 100 Libertel Groep B.V. Netherlands Holding company 70 Libertel B.V. Netherlands Cellular network operator 70 Libertel Verkoop en Services B.V. Netherlands Service provider 70 Vodafone Malta Limited Malta Cellular network operator 80 Vodafone Gibraltar Limited Gibraltar Investment company 100 Vodafone Australasia Pty Limited Australia Holding company 100 COUNTRY OF INCORPORATION OR PERCENTAGE NAME REGISTRATION ACTIVITY SHAREHOLDING - ------------------------------------------------------ -------------- --------------------------- --------------- Vodafone Holdings Australia Pty Limited Australia Cellular network operator 91 Vodafone Pty Limited Australia Service provider 91 Talkland Retail Australia Limited England(*) Service provider and retailer 91 Vodac Pty Limited Australia Service provider 100 Vodacall Pty Limited Australia Service provider 100 Panafon SA Greece Cellular network operator 55 Panavox SA Greece Service provider 55 Vodafone New Zealand Limited New Zealand Cellular network operator 100 Vodafone Mobile NZ Limited New Zealand Licence Holder 100 - ------------------------ (*) Incorporated in England, principal place of business in Australia. 2. PRINCIPAL ASSOCIATED UNDERTAKINGS Vodafone Group's principal associated undertakings all have share capital consisting solely of ordinary shares unless otherwise stated. The country of incorporation or registration of all associated undertakings is also their principal place of operation. COUNTRY OF INCORPORATION OR PERCENTAGE NAME REGISTRATION ACTIVITY SHAREHOLDING(*) - ---------------------------------------------------- -------------- -------------------------- ------------------- Celtel Limited Uganda Cellular network operator 37 Comfone AG Switzerland Roaming services provider 50 Europolitan Holdings AB Sweden Holding company for cellular network 20 Martin Dawes Telecommunications Limited England Service provider 20 Mobile Telecom Group Limited England Holding Company for service provider 20 Societe Francaise du Radiotelephone S.A. France Cellular network operator 20 Page U.K. Limited Scotland Paging service provider 50 Misrfone Telecommunications Company SAE Egypt Cellular network operator 30 Vodafone Fiji Limited Fiji Cellular network operator 49 Vodacom Group (Pty) Limited South Africa Holding company 32 Vodacom (Pty) Limited South Africa Cellular network operator 32 2 COUNTRY OF INCORPORATION OR PERCENTAGE NAME REGISTRATION ACTIVITY SHAREHOLDING(*) - ---------------------------------------------------- -------------- -------------------------- ------------------- Vodac (Pty) Limited South Africa Service provider 32 Vodacom Equipment Company (Pty) Limited South Africa Supply of cellular radio telephone equipment 32 - ------------------------ (*) To nearest whole percentage. 3. PRINCIPAL INVESTMENTS The shareholdings in investments consist solely of ordinary shares unless otherwise stated. The principal country of operation for the investments is the same as the country of incorporation or registration. COUNTRY OF INCORPORATION OR PERCENTAGE NAME REGISTRATION ACTIVITY SHAREHOLDING(A) - ---------------------------------------------------- -------------- -------------------------- ------------------- E-Plus Mobilfunk GmbH Germany Cellular network operator 17 Globalstar L.P.(b) USA Development of satellite telecommunications service 3 - ------------------------ (a) To nearest whole percentage. (b) Partnership interest. 3