**Exhibit 21**

 

**WATSONWYATT WORLDWIDE, INC.**

**SUBSIDIARIES**

 
| **SUBSIDIARY  NAME**                                      | ** ** | **JURISDICTION OF  INCORPORATION/  ORGANIZATION** | ** ** | **Name(s) under  which such  subsidiary does  business (if  different)(a)** |
|-----------------------------------------------------------|------------|---------------------------------------------------|------------|----------------------------------------------------------------------------------|
| ** **                                                | ** ** | ** **                                        | ** ** | ** **                                                                       |
| Watson Wyatt Argentina  S.A.                              |       | Argentina                                         |       |                                                                             |
| Watson Wyatt Australia  Pty Ltd                           |       | Australia                                         |       |                                                                             |
| Wycomp Pty Ltd                                            |       | Australia                                         |       |                                                                             |
| Watson Wyatt  Superannuation Pty Ltd                      |       | Australia                                         |       |                                                                             |
| Watson Wyatt (Austria)  GmbH                              |       | Austria                                           |       |                                                                             |
| Watson Wyatt Insurance  and Financial Services SA         |       | Belgium                                           |       |                                                                             |
| Watson Wyatt NV                                           |       | Belgium                                           |       |                                                                             |
| Watson Wyatt Brasil  Ltda                                 |       | Brazil                                            |       |                                                                             |
| Watson Wyatt Canada ULC                                   |       | Canada                                            |       |                                                                             |
| Watson Wyatt Chile S.A.                                   |       | Chile                                             |       |                                                                             |
| Corredores de Seguros  Watson Wyatt Limitada              |       | Chile                                             |       |                                                                             |
| Watson Wyatt  Consultancy (Shanghai) Ltd                  |       | China                                             |       |                                                                             |
| Watson Wyatt  Consultancy (Shenzhen) Ltd                  |       | China                                             |       |                                                                             |
| Watson Wyatt Consultores  Colombia S.A.                   |       | Colombia                                          |       |                                                                             |
| Watson Wyatt &  Company                          |       | Delaware                                          |       |                                                                             |
| Wyatt Data  Services, Inc.                           |       | Delaware                                          |       |                                                                             |
| Watson Wyatt Investment  Consulting, Inc.            |       | Delaware                                          |       |                                                                             |
| Watson Wyatt Insurance  Consulting, Inc.             |       | Delaware                                          |       |                                                                             |
| Watson Wyatt Insurance  and Financial Services, Inc. |       | Delaware                                          |       |                                                                             |
| Watson Wyatt Canadian  Holdings, Inc.                |       | Delaware                                          |       |                                                                             |
| Watson Wyatt European  Investment Holdings, Inc.     |       | Delaware                                          |       |                                                                             |
| Watson Wyatt European  Investment Holdings 1, LLC         |       | Delaware                                          |       |                                                                             |
| Watson Wyatt European  Investment Holdings 2, LLC         |       | Delaware                                          |       |                                                                             |
| Jupiter Saturn Holdings  Inc.                             |       | Delaware                                          |       |                                                                             |
| Jupiter Saturn Delaware  Inc.                             |       | Delaware                                          |       |                                                                             |
| Jupiter Saturn  Pennsylvania Inc.                         |       | Delaware                                          |       |                                                                             |
| Watson Wyatt SARL                                         |       | France                                            |       |                                                                             |
| Watson Wyatt Heissmann  (Düsseldorf) GmbH            |       | Germany                                           |       |                                                                             |
| Watson Wyatt Insurance  Consulting GmbH                   |       | Germany                                           |       |                                                                             |
| Watson Wyatt Heissmann  GmbH                              |       | Germany                                           |       |                                                                             |
| IPC Heissmann  Versicherungsservice GmbH                  |       | Germany                                           |       |                                                                             |
| Verlag Arbeit Und Alter  GmbH                             |       | Germany                                           |       |                                                                             |
| Heissmann Consultants  GmbH                               |       | Germany                                           |       |                                                                             |
| PM&S  Pensions-managment und Sicherungs-Treuhand AG   |       | Germany                                           |       |                                                                             |
| Watson Wyatt Insurance  Consulting Ltd                    |       | Hong Kong                                         |       |                                                                             |
| Watson Wyatt Hong Kong  Limited                           |       | Hong Kong                                         |       |                                                                             |
| Watson Wyatt Investment  Consulting Hong Kong Limited     |       | Hong Kong                                         |       |                                                                             |
| Watson Wyatt Kft                                          |       | Hungary                                           |       |                                                                             |
| Watson Wyatt Insurance  Consulting Private Ltd            |       | India                                             |       |                                                                             |
| Watson Wyatt India Private  Limited                       |       | India                                             |       |                                                                             |
| PT Watson Wyatt  Purbajaga                                |       | Indonesia                                         |       |                                                                             |
| PT Watson Wyatt  Indonesia                                |       | Indonesia                                         |       |                                                                             |
| Watson Wyatt (Ireland)  Limited                           |       | Ireland                                           |       |                                                                             |

 

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| Watson Wyatt Consulting  Limited                                                  |   | Ireland              |   |   |
|-----------------------------------------------------------------------------------|--------|----------------------|--------|--------|
| BCI Trustees Limited                                                              |   | Ireland              |   |   |
| Watson Wyatt Italia Srl                                                           |   | Italy                |   |   |
| Watson Wyatt Insurance  Consulting KK                                             |   | Japan                |   |   |
| Watson Wyatt KK                                                                   |   | Japan                |   |   |
| Watson Wyatt Luxembourg  SARL                                                     |   | Luxembourg           |   |   |
| Watson Wyatt (Malaysia)  Sdn Bhd                                                  |   | Malaysia             |   |   |
| Watson Wyatt Holdings  (Mauritius) Limited                                        |   | Mauritius            |   |   |
| Watson Wyatt Mexico,  S.A. de C.V.                                                |   | Mexico               |   |   |
| Watson Wyatt European  Region BV                                                  |   | Netherlands          |   |   |
| Watson Wyatt Insurance  Consulting BV                                             |   | Netherlands          |   |   |
| Watson Wyatt BV                                                                   |   | Netherlands          |   |   |
| Watson Wyatt  International, Inc.                                            |   | Nevada               |   |   |
| Watson Wyatt Philippines, Inc.                                               |   | Philippines          |   |   |
| Watson Wyatt (Portugal) Unipessoal Limitada                                       |   | Portugal             |   |   |
| Watson Wyatt Puerto  Rico, Inc.                                              |   | Puerto Rico          |   |   |
| WatsonWyatt, Limited Liability Company                                            |   | Russia               |   |   |
| Watson Wyatt Insurance  Consulting Pte Ltd                                        |   | Singapore            |   |   |
| Watson Wyatt Singapore  Pte Ltd                                                   |   | Singapore            |   |   |
| Watson Wyatt Insurance  Consulting (Spain) SA                                     |   | Spain                |   |   |
| Watson Wyatt de Espana  SA                                                        |   | Spain                |   |   |
| Watson Wyatt AB                                                                   |   | Sweden               |   |   |
| Watson Wyatt AG                                                                   |   | Switzerland          |   |   |
| Watson Wyatt (Thailand)  Limited                                                  |   | Thailand             |   |   |
| Watson Wyatt Middle  East (L.L.C.)                                                |   | United Arab Emirates |   |   |
| Watson Wyatt Limited                                                              |   | United Kingdom       |   |   |
| Watson Wyatt Holdings  Limited                                                    |   | United Kingdom       |   |   |
| Watson Wyatt Trustees  Limited                                                    |   | United Kingdom       |   |   |
| The Wyatt Company  Holdings Limited                                               |   | United Kingdom       |   |   |
| Watson Wyatt Services  Limited                                                    |   | United Kingdom       |   |   |
| Watson Wyatt Pretium  Limited                                                     |   | United Kingdom       |   |   |
| Watson Wyatt Holdings  (Europe) Limited                                           |   | United Kingdom       |   |   |
| Watson Wyatt  International Limited                                               |   | United Kingdom       |   |   |
| Watson Wyatt  Insurance & Financial Services Consulting Holdings Limited |   | United Kingdom       |   |   |
| Watson Wyatt European  Region Limited                                             |   | United Kingdom       |   |   |
| Watson Wyatt European  Investment Holdings Limited                                |   | United Kingdom       |   |   |
| Watsons Pensioneer  Trustees Limited                                              |   | United Kingdom       |   |   |
| Watson Wyatt (UK)  Acquisitions 1 Limited                                         |   | United Kingdom       |   |   |
| PCL Limited                                                                       |   | United Kingdom       |   |   |
| PCL 1991 Limited                                                                  |   | United Kingdom       |   |   |
| Wyatt Trustee Limited                                                             |   | United Kingdom       |   |   |
| The Wyatt Company (UK)  Limited                                                   |   | United Kingdom       |   |   |
| Wyatt Pension Plan  Trustee Limited                                               |   | United Kingdom       |   |   |
| Wyatt Financial  Services Limited                                                 |   | United Kingdom       |   |   |
| Watsons International  Limited                                                    |   | United Kingdom       |   |   |
| RWS Trustee Limited                                                               |   | United Kingdom       |   |   |
| Watson Wyatt Healthcare  Trustees Limited                                         |   | United Kingdom       |   |   |
| Watson Wyatt (UK)  Acquisitions 2 Limited                                         |   | United Kingdom       |   |   |
| Watson Wyatt European  Investment Limited Partnership                             |   | United Kingdom       |   |   |
| Watson Wyatt Uruguay  S.A.                                                        |   | Uruguay              |   |   |
| Watson Wyatt Vietnam  Company Limited                                             |   | Vietnam              |   |   |

 

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(a) allof these subsidiaries do business under their own name or under the name WatsonWyatt Worldwide.

 

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