text: This is the dramatic moment a coach exploded into a fireball on a busy interchange at the M25 motorway. The coach erupted into flames on the A2 slip road to the M25 near Dartford in Kent this morning with only the driver on board. The blaze sent plumes of black smoke across the carriageway with footage taken by motorists showing the wreckage of the vehicle. The coach erupted into flames this morning on a busy interchange at the M25 motorway sending smoke into the air . Fire crews were sent to tackle the fire and spent an hour trying to douse the flames from the vehicle . Kent firefighters were sent to tackle the fire and were forced to close the slip road while they doused the flames. The fire completely destroyed the coach and is believed to have started in the engine compartment and spread to the body of the coach. A spokesman for Kent Fire and Rescue said: 'Fire crews were at the scene of a single-decker coach fire for appoximately an hour. Fire crews had to close the A2 slip road to the M25 near Dartford while they worked to tackle the blaze . The fire is believed to have started in the engine compartment before it quickly spread to the body of the vehicle . 'Firefighters wearing breathing apparatus used two hose reels to tackle the blaze. 'The fire, which destroyed the vehicle, is believed to have started in the engine compartment and spread to the body of the coach. 'No-one was injured and only the driver was on board at the time of the incident.' The slip road still remains closed as the Highways Agency begin to remove the wreckage of the coach from the scene. Drivers are now being urged to avoid the area near to junction two of the A2 with traffic backed up to Dartford Heath. Meanwhile a separate crash near the entrance to the Dartford Tunnel this morning has also caused slow traffic on the M25 anticlockwise. The burnt out wreckage of the coach which burst into flames with only the driver on board . The slip road still remains closed while works begins to remove the wreckage of the coach from the scene .
target: The coach burst into flames while on the A2 slip road to the M25 at Dartford .
  The blaze sent plumes of black smoke drifting across the carriageway .
  It is thought that the fire began in the engine and spread to the rest of the coach .