Keedonwood Road, Bromley. Reports of three houses alight- all occupants evacuated. Image: Google Satellite

A fire has affected three houses in Keedonwood Road, Bromley and damaged the roofs of two terraced houses.

21 firefighters, and police and ambulance units have been at the scene.

Roofs of two terraced houses damaged by fire in Keedenwood Road, Bromley. Image: @LondonFire

A National Police Air Service helicopter for London provided aerial views for the operation.

The fire badly damaged the roof of two terraced houses.

Crews are expected to be at the scene damping down for some time.

Four fire engines from Woodside, Greenwich, Lee Green and Lewisham were at the scene.

The Brigade was called at 4.37 pm and the fire was under control by 6.30 pm.

The cause of the fire is not known at this stage.

Crews are also attending a house fire on Keedonwood Rd #Bromley. More to follow. pic.twitter.com/kpce7b0x3P

— London Fire Brigade (@LondonFire) May 22, 2015

Officers are curently on scene at a fire in #KeedonwoodRoad BR1 with @LondonFire @NPASLondon and @Ldn_Ambulance road closures in place #SgtD

— Lewisham MPS (@MPSLewisham) May 22, 2015

Currently 3 houses on fire all residents have been evacuated and there are no reports of any persons trapped #SgtD

— Lewisham MPS (@MPSLewisham) May 22, 2015

An ambulance & duty officer are at a fire in #Bromley with @LondonFire. Currently no patients, we remain on standby pic.twitter.com/wqS5A0pZgG

— ChrisHawkswell, EP07 (@LAS_TacAdvisor) May 22, 2015