The court heard Mr Cook had applied for planning permission for the rooflight and a dormer beside it as part of extensive works to his home, in Dover House Road, close to Richmond Park, in 2019.
Mr and Mrs Taylor-Davies objected to elements of the project, calling the windows an “invasion of their privacy”.
The Velux “directly overlooks our bed,” they said, claiming that they would be “overlooked day and night” on their top floor, where they sleep and shower, and Mrs Taylor-Davies studies for her PhD in embroidery.
Barrister Stephen Whale said the mannequin had been placed in the window on “a number of occasions”.
He added: “It serves to give the impression, as presumably he intends, that there is a person at the window overlooking their property and invading their privacy.”
“It only adds to their distress.
“The overlooking of their property and the invasion of their privacy as a result of the Velux window is very distressing to them.”
Giving judgment, Mrs Justice Lang said: “Mr Cook periodically installs a mannequin in the roof light which gives the impression that there is a person at the window looking out at [the claimants’ home].
“This suggests to me that he is not taking the claimants’ concerns seriously, and so he is unlikely to maintain obscuring film voluntarily.”