Terrified passengers shattered windows to escape a London bus smash after the roof caved in pinning bloodied commuters to the floor.
Around a dozen people were evacuated from the 13-tonne vehicle during rush hour yesterday after a driver "lost consciousness" and ploughed into a glass-fronted shop.
On the top deck, a woman was left "wedged in the front right-hand side" as she screamed for help, one traveller said.
Passengers screamed "fire" as smoke billowed from underneath the vehicle and commuters smashed windows in attempt to free the injured.
Top deck passenger Andrew Matthews, 34, has described the moment realised the bus was about to crash, curled up and 'braced himself' for the worst.
A rescue team battled to free trapped commuters
A Transport for London spokeswoman said a route 77 double-decker bus was involved
"I noticed the bus drifting," Mr Matthews said. "I heard a smash and saw the roof of the shop going through the bus from the front left. It went to the fourth or fifth row.
"I wedged myself in, bracing myself.
"As soon as the bus came to a stop there was yelling, screaming.
"I noticed a lady wedged in the front right-hand side. She was screaming for help. There was a lot of blood."
Andrew says he heard the glass shatter and "saw the roof of the shop going through the bus".
A nurse travelling on the bus said the driver told her he "doesn't remember hitting anything" and had lost consciousness before ploughing into the shop front.
The bus driver has been taken to hospital and nine other people have been treated at the scene for minor injuries following the crash at Lavender Hill, near Clapham Junction, in Battersea, south London, this morning.
Both women were safely freed from the top deck.
Passengers were 'pinned' on the top deck
Passengers were treated at the scene
Witnesses reported seeing smoke coming from under the bus.
Ms Morin, 33, lives close to the scene and was hoping to catch the bus before she saw it crash.
She said: "I saw this woman shouting and banging on the glass.
"Everybody shouted 'fire, fire'.
"I went on to the bus. I talked to her and was holding her hands.
"She was pinned. I wouldn't have been able to get her out.
"She was so scared because people were shouting fire. There was a lot of smoke."
Nurse Amy Mullineux, 40, of Wandsworth Common, said: "I spoke to him [the driver]. He said he blacked out before the bus hit the shop.
"He doesn't remember hitting anything.
"The paramedic told me they think he had some kind of fit."
Photos on social media show the vehicle on the pavement and smashed into the front of the Poggen Pohl Kitchen Design Centre.
Glass lies shattered across the ground and paramedics can be seen tending to people on the top deck.
A Met Police spokesman said: "Police were called at approximately 06:55hrs on Thursday, 10 August to reports of a bus in collision with a building on Lavender Hill at the junction with Haltenburg Gardens, SW11.
"Officers, the London Fire Brigade and London Ambulance Service are in attendance.
"The driver has been taken to a south London hospital. A number of passengers were treated at the scene.
"Two passengers remain trapped on the upper deck.
"The road is currently closed to traffic."