**Exhibit 21**

** **

**WATSONWYATT & COMPANY HOLDINGS**

**SUBSIDIARIESOF THE REGISTRANT**

 
| **SUBSIDIARY NAME**                       |   | **JURISDICTION  OF  INCORPORATION/  ORGANIZATION** |   | **Name(s)  under which  such subsidiary does  business (if different)*** |
|-------------------------------------------|--------|----------------------------------------------------|--------|--------------------------------------------------------------------------|
|                                      |   |                                               |   |                                                                     |
| Watson Wyatt Argentina S.A.               |   | Argentina                                          |   |                                                                     |
| Watson Wyatt Australia Pty Ltd            |   | Australia                                          |   |                                                                     |
| Wycomp Pty Ltd                            |   | Australia                                          |   |                                                                     |
| Watson Wyatt Superannuation Pty Ltd       |   | Australia                                          |   |                                                                     |
| Watson Wyatt S.A.                         |   | Belgium                                            |   |                                                                     |
| Watson Wyatt Brasil Ltda.                 |   | Brazil                                             |   |                                                                     |
| Watson Wyatt Consulting Limited           |   | Canada                                             |   |                                                                     |
| Watson Wyatt Company Limited              |   | Canada                                             |   |                                                                     |
| Watson Wyatt Consultancy (Shanghai) Ltd.  |   | China                                              |   |                                                                     |
| Watson Wyatt Colombia S.A.                |   | Colombia                                           |   |                                                                     |
| Watson Wyatt S.A.R.L.                     |   | France                                             |   |                                                                     |
| Watson Wyatt GmbH                         |   | Germany                                            |   |                                                                     |
| Wyatt Bode Grabner GmbH                   |   | Germany                                            |   |                                                                     |
| Watson Wyatt Hong Kong Limited            |   | Hong Kong                                          |   |                                                                     |
| Watson Wyatt India Private Limited        |   | India                                              |   |                                                                     |
| P.T. Watson Wyatt Purbajaga               |   | Indonesia                                          |   |                                                                     |
| P.T. Watson Wyatt Indonesia               |   | Indonesia                                          |   |                                                                     |
| Watson Wyatt Italia s.r.l.                |   | Italy                                              |   |                                                                     |
| Watson Wyatt K.K.                         |   | Japan                                              |   |                                                                     |
| Watson Wyatt (Malaysia) Sdn. Bhd.         |   | Malaysia                                           |   |                                                                     |
| Watson Wyatt Holdings (Mauritius) Limited |   | Mauritius                                          |   |                                                                     |
| Watson Wyatt Mexico, S.A. de  C.V.        |   | Mexico                                             |   |                                                                     |
| Watson Wyatt B.V.                         |   | Netherlands                                        |   |                                                                     |
| Watson Wyatt European Region B.V.         |   | Netherlands                                        |   |                                                                     |
| Watson Wyatt New Zealand Limited          |   | New Zealand                                        |   |                                                                     |
| Retirement Planning Seminars (NZ) Limited |   | New Zealand                                        |   |                                                                     |
| Retirement Trustees NZ Limited            |   | New Zealand                                        |   |                                                                     |
| Watson Wyatt Philippines, Inc.            |   | Philippines                                        |   |                                                                     |
| Watson Wyatt Puerto Rico, Inc.            |   | Puerto Rico                                        |   |                                                                     |
| Watson Wyatt Singapore Pte. Ltd.          |   | Singapore                                          |   |                                                                     |
| Watson Wyatt de España, S.A.         |   | Spain                                              |   |                                                                     |
| Watson Wyatt A.B.                         |   | Sweden                                             |   |                                                                     |
| Watson Wyatt AG                           |   | Switzerland                                        |   |                                                                     |
| Watson Wyatt (Thailand) Ltd.              |   | Thailand                                           |   |                                                                     |
| Wyatt Trustee Limited                     |   | U.K.                                               |   |                                                                     |
| PCL (1991) Limited                        |   | U.K.                                               |   |                                                                     |
| PCL Limited                               |   | U.K.                                               |   |                                                                     |
| The Wyatt Company (UK) Limited            |   | U.K.                                               |   |                                                                     |
| The Wyatt Company Holdings Limited        |   | U.K.                                               |   |                                                                     |
| Watson Wyatt Holdings (Europe) Limited    |   | U.K.                                               |   |                                                                     |
| Watson Wyatt International Limited        |   | U.K.                                               |   |                                                                     |

 

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| Wyatt Financial Services Limited         |   | U.K.          |   |   |
|------------------------------------------|--------|---------------|--------|--------|
| Wyatt Pension Plan Trustee Limited       |   | U.K.          |   |   |
| Watson Wyatt European Region Limited     |   | U.K.          |   |   |
| Watson Wyatt & Company               |   | U.S. Delaware |   |   |
| Watson Wyatt Insurance Consulting, Inc.  |   | U.S. Delaware |   |   |
| Watson Wyatt Investment Consulting, Inc. |   | U.S. Delaware |   |   |
| Wyatt Data Services, Inc.                |   | U.S. Delaware |   |   |
| Watson Wyatt International, Inc.         |   | U.S. Nevada   |   |   |

 

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*All of thesesubsidiaries do business under their own name or under the name Watson WyattWorldwide.

 

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