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A young Tory politician ­hoovers up a line of white powder – believed to be ­deadly mephedrone – during the ­party conference this week.

Before snorting the banned drug, known as meow meow, Will Hanley expertly chops out lines in his hotel room as his official pass dangles in view.

Less than 48 hours later the 23-year-old joined other party members to cheer David ­Cameron’s conference speech – which included plans to get addicts off drugs.

Hanley’s brazen drug-taking lifts the veil on the sordid side of the Tory conference – and is a devastating blow to the Conservatives’ battered reputation as the party of moral values.

He is an active member of Conservative ­Future – the Tory youth wing meant to breed the next generation of their politicians.

The footage was taken on Monday night after a fringe event in a pub hosted by the beer industry.

Hanley headed straight for the bathroom after returning to his £60-a-night room in the Nite Nite hotel, 200 yards from the Cameron’s hotel the Hyatt.

Still in his suit, he chopped the powder into thin lines with a card and snorted it through a banknote, boasting: “I’ve got a massive tolerance.”

In a rambling conversation, chubby Hanley, who wants to work at the House of Commons, talked at length about his drug-taking, and admitted using ecstasy and mephedrone.

In 2007, the shooting fan, from Broughton, Northants, was a Conservative candidate for Wellingborough Council but lost out by 121 votes.

Mephedrone used to be sold legally as plant food but was banned in March after being blamed for up to 52 deaths.

Speaking at home in Kettering yesterday, Hanley’s mum Jackie said: “I know William has been dabbling in substances as well as drinking too much.

“I have tried talking to him but if someone is bent on ­destruction then all the ­nagging in the world is not going to make someone stop.”

gary.anderson@sundaymirror.co.uk