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Employees who chose to take part anonymously reviewed their CEOs on the Glassdoor website.
Winners came from a range of industries, including technology, retail and consulting. Only one woman made the UK's top 28. But that is partly a reflection of the demographic of major UK companies, which are underrepresented by women in their higher ranks.
Glassdoor's list includes some huge international names, like Facebook CEO Mark Zuckerberg, but also a large number of bosses of smaller, less well-known companies.
Check out the top 28 below.
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