AMY WINEHOUSE’s father is fuming after he found out his daughter has secretly reunited with her ex-husband BLAKE FIELDER-CIVIL, according to a new U.K. report.

Mitch Winehouse was instrumental in removing the singer from the London party scene last year (09), forcing her into rehab and then an extended holiday in the Caribbean to help her kick her drink and drug addiction.

Winehouse’s rocky marriage to former junkie Fielder-Civil ended earlier this year (09), but the star has been dogged by reports of secret meetings with her ex, with a British tabloid reporting the pair enjoyed a romantic date on Friday night (04Sep09).

Winehouse was rumoured to have later sneaked Fielder-Civil back to her north London home.

And the reports have infuriated Mitch Winehouse – who fears his daughter will revert to her drug-taking ways if she reunites with her former spouse.

A source tells British newspaper The Sun, “Mitch hates the fact that (Fielder-Civil) has reappeared – it’s making him ill. It’ll force him into an early grave. He can’t believe Blake has wormed his way back into his daughter’s life. He thinks it’s the worst scenario for Amy.

“Just when she’s starting to sort herself out, the man responsible for dragging her into the gutter is crawling back into her life. Mitch is praying history doesn’t repeat itself.”

Fielder-Civil previously admitted introducing Winehouse to the hard drugs which wrecked their marriage and threatened to destroy her music career.