The 24-year-old singer was arrested and questioned about the film at Limehouse police station in east London for over nine hours last week.

The spokesman said in a statement: "Police have confirmed that no action will be taken against Amy Winehouse in relation to an investigation into a video handed to them in January.

"She was questioned by police last week and released on unconditional bail.

"They have now concluded their inquiries and no charges will be brought.

"Amy is pleased to be able to move on and concentrate on music and particularly looks forward to seeing her fans again at eagerly awaited festival performances this summer."

On January 22 The Sun published pictures that appeared to show Winehouse smoking crack cocaine. The Rehab singer was also shown apparently snorting Ecstasy and cocaine and admitting downing six Valium.

The newspaper passed video footage of the episode to the Metropolitan Police.

Scotland Yard confirmed that the Crown Prosecution Service (CPS) had reviewed the case and decided that no charges should be brought.

The CPS said in a statement: "Following an extensive police inquiry, a file was submitted to the CPS to determine whether anti-drugs laws had been broken.

"From the footage we identified and considered two potential offences: possessing a controlled drug and allowing premises to be used for the supply by others of a controlled drug.

"In order to prove either offence we had to establish that the substances depicted on the footage were controlled drugs.

"The footage itself did not establish whether the substances were, in fact, illegal drugs and in the absence of any forensic opportunity or reliable evidence from any witness who could say clearly what the substances were, we concluded we could not establish to the high criminal standard of proof required in a criminal court that they were controlled drugs."