A moped rider suspected of crashing into a police car was found hiding on the roof of a nearby house.
The rider ran off after ploughing into a patrol car on Thursday lunchtime. Officers called in back-up including a helicopter to search for the suspect in Romford.
He was eventually spotted hiding on top of a house with his hood pulled over his head and his arms resting on his knees.
He is thought to have been sitting on the roof for around 15 minutes before he was coaxed down and arrested.
A spokesman for the Met's Roads and Transport police unit tweeted: