Separately, Fremantle hired an external lawyer to examine accusations about his conduct in February.
In both cases, sources said Andreae was accused of using sexualized language that made female colleagues uncomfortable.
The company did not address specific accusations against Andreae when approached by Deadline with questions about the matter.
Simon AndreaeFremantle
Deadline reached out to Fremantle and Andreae for comment about the misconduct allegations on Thursday morning UK time.
He announced his resignation less than 24 hours later.
He says things that might have been said in a bygone age, said one person.
Fremantle UK is responsible for making ‘Britain’s Got Talent’
Nobodys dealt with it.
Id like to thank everyone at Fremantle and wish you every success.
Sources said Andreae was at work between the two investigations into his conduct.
Andreae has held several senior positions in the television industry on both sides of the Atlantic.
He served as Foxs Alternative Entertainment chief, replacing Mike Darnell.
He exited after a rocky year-and-a-half tenure and went on to found Naked in 2015.
He has written two books:Anatomy of DesireandThe Secrets Of Love And Lust.
