LONDON, Dec 8 (Reuters) - Microsoft denied on Friday that it had taken control of OpenAI after Britain's anti-trust regulator said it was reviewing the nature of their partnership.

"The only thing that has changed is that Microsoft will now have a non-voting observer on OpenAI’s Board, which is very different from an acquisition such as Google’s purchase of DeepMind in the UK," Microsoft President Brad Smith said in a statement.

"We will work closely with the CMA to provide all the information it needs," he said. (Reporting by Foo Yun Chee in Brussels, Writing by Sarah Young; Editing by Kate Holton)