It's obvious a professionally-designed survey - not the usual jumble of question you often see. But I agree it should include some sort of credentials, such as the survey organisation's name and address.
Also, the message on the last page is a bit curious:
Quote:
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Due to the high volume of responses, please leave this page open for 5 minutes to ensure our systems have time to save all your responses accurately.
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Seems like an odd way to implement a question-response system.