Amy Winehouse's husband asks her to fund his drug habit while in prison. Blake Fielder-Civil reportedly told his jailmates that he had asked his famous wife to deposit bank payments to another inmate in exchange for heroin.

Fielder-Civil is currently being held in Pentonville prison on a charge of trying to pervert the course of justice and assault. He and the "Rehab" singer had been married since May 2007.

A source inside the cell says, "Blake's addition is just as bad as ever and he's bragging about how he's been asking Amy to help him get a fix. He showed us the bank details of a known dealer inside Pentonville and said he'd asked Amy to make regular wire transfers to this guy in exchange for heroin."

"Apparently he wanted each transfer to end in a single pound, so the dealer would know who the money came from."

Each "wrap" costs $200, four times its street value.

The insider adds to The Sun, "Blake doesn't care as long as he gets his hit. He's prepared to put his wife at risk. It shows how desperate he's become."

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