How Ita O'Brien, intimacy co-ordinator pioneer, ensures a safe environment for actors on set

Ita O'Brien, who pioneered the role of an intimacy co-ordinator and is known for her work in series featuring powerful sexual content such as 'I May Destroy You,' 'Sex Education' and 'Normal People,' says the key to believable sex scenes in film is preparation and ensuring the actors involved feel safe on set.