Clients and evaluators play a vital role in ensuring the success of an end of project evaluation. The role played by evaluators has been the subject of numerous articles while that of the client has received less attention. The paper sets to contribute to the latter and argues that client practices do affect the way evaluation work proceeds. Using a group of evaluators, the paper discusses their experience of client practices and how this affected the process, for locally sponsored evaluations. The experiences indicated that indeed clients can enhance or hamper the process. In general, when the latter happens, it is because the client did not plan the evaluation; did not support and facilitate the process; or the disposition was not appropriate. Improving in these areas may enhance the process and improve the quality and usability of results