A disgusting video shows thousands of bed bugs crawling around a bedroom where a couple slept throughout a six-year infestation.

The blanket on top of the bed is covered in eggs and the bed frame is stained with blood where the horrific creatures feasted on their human hosts in London.

The men tasked with the horrible job of cleaning the apartment pull back the mattress as thousands of bugs scatter away from the light.

The exterminators point out bulges in the ceiling where vast numbers of the bloodthirsty insects have gathered and even show where colonies have formed under a fan and around wall sockets.

Peter Bowers-Davis, part of the team dealing with the infestation, tells the camera it is “one of the worst that I’ve seen.”

He taps the wall where large holes and cracks can be seen, and the creepy crawlies pour out.

The apartment is part of a complex of 135 units and has been lived in by its occupants and the tens of thousands of bugs for years.

Now dozens of other apartment have bed bugs after they spread from this apartment — 13 have already been treated, with many more expected to need treatment.

Wearing gloves and boots taped onto overalls and wading through the infested bedroom, Bowers-Davis says: “Last night they were sleeping in this bed.

“This is the bed that they have slept in every night, the two of them.”

Pulling back the covers to reveal hundreds of crawling bugs and eggs, he adds: “It takes a lot for me to wear coveralls.”

Mark, the man filming the disgusting scenes, says: “This is what these poor residents of the building are up against.”

“This is actually where someone was living.”

The team reveals the white striped duvet cover is now brown, such is the extent of the infestation.

As the pair reach the bottom of the bed, they point out a trash bag, which the couple put there a few days ago. It is already covered with large bugs.