Clare Sillery, the commissioning editor behind documentaries including Freddie Flintoff’s Field of Dreams and Taken: Britain’s Forced Adoption Scandal, is stepping down as the BBC’s head of commissioning documentaries, with immediate effect, according to Broadcast.

Sillery, who has spent more than 20 years at the broadcaster, oversaw documentary commissions across BBC TV channels and iPlayer, including titles such as Once Upon a Time in Northern Ireland, Uprising, House of Maxwell and The Real Mo Farah.

She will still complete two Once Upon a Time documentaries for the BBC.

Her departure follows another senior factual commissioning change, with Channel 4 News recently appointing BBC World investigations editor Marc Perkins as its new senior commissioning editor.