By Lucy Crossley PUBLISHED: 11:57 EST, 15 June 2013 | UPDATED: 12:44 EST, 15 June 2013 A woman driver was forced to dramatically stop her car on the fast lane of a busy motorway in a terrifying road rage incident, police have said. The victim had been driving her silver BMW on the anti-clockwise stretch of the M25 when a blue, foreign-registered Mercedes started tailgating her vehicle. The Mercedes, believed to be a left-hand drive, then undertook the BMW Z4 before pulling back in front of it. Road rage: The woman had been travelling in the fast lane of the M25 motorway when she was forced to stop when a Mercedes dramatically pulled out in front of her and came to an abrupt halt (file picture)
@highlight
Foreign-registered Mercedes had been tailgating woman driver
@highlight
Car then pulled out in front woman, forcing her to stop
@highlight
Road rage incident happened on anti-clockwise stretch through Surrey
'The @placeholder is quite distinctive and we believe that other drivers may have seen it driving at speed on the motorway, so I would appeal for any witnesses to come forward.'