Footage from 2013 shows the aftermath of extreme turbulence that saw dozens of passengers injured on a flight from Singapore to London.

The video shows food, drink, and passengers' belongings scattered on the cabin's floor after the plane dropped "30 metres" according to the filmer.

They added: "I was on the Singapore Airlines flight SQ308 from Singapore to London. I have experienced bad turbulence before but this was horrific! The plane just dropped out of the air!

"The crew were really good and everyone joined in in cleaning up the mess which took about 5 hours to clean! It smelt pretty bad as well! Noodles and Shrimp dumplings everywhere!!!

"We may have all experienced turbulence on flights, but when a rough patch is so bad that the ceiling ends up covered in coffee then you know it's serious.

"A total of 11 passengers and one crew member were injured on flight SQ308 from Singapore to London."

This video was filmed on May 26, 2013.

I was on the Singapore Airlines flight SQ308 from Singapore to London. I have experienced bad turbulence before but this was horrific! The plane just dropped out of the air! The crew were really good and everyone joined in in cleaning up the mess which took about 5 hours to clean! It smelt pretty bad as well!! Noodles and Shrimp dumplings everywhere!!!

We may have all experienced turbulence on flights, but when a rough patch is so bad that the ceiling ends up covered in coffee then you know it's serious.

Passengers on a recent Singapore Airlines flight were left surrounded by a chaotic mess after their flight fell 30 metres when it hit severe turbulence.

A total of 11 passengers and one crew member were injured on flight SQ308 from Singapore to London last Sunday.