Unite union protesters can be seen shouting abuse and surrounding Boris Johnson's 4x4 vehicle outside the DP World in Stanford-le-Hope, Thurrock, in an attempt to get the Mayor of London to speak to them.
The 20 demonstrators, who are demanding that the port allows union representation, try and stop the Mayor's vehicle after his visit to show his support for the new port's logisitics park.
"Come on Boris, have a word," they can be heard shouting.
One union member tries to get on the front of the vehicle but security guards clear the way for the car.
Throughout the confrontation Mr Johnson can be seen sitting passively in the vehicle before the car speeds back to London.