Armed police forces have scrambled to the scene. Met Police have confirmed gunshots were fired. Photos posted on social media show police guarding of the road.
A local resident said shots had been fired near the Ukrainian Embassy from a car at around 10am.
Armed police had allegedly responded by opening fire.
Witnesses said 10 or more gunshots had been fired.
The Holland Park area is home to several embassies including the Embassy of Uzbekistan, the Embassy of Greece and the Cameroon High Commission in London.
More to follow…