Troubled singer Amy Winehouse will perform at this year's Glastonbury Festival, organisers revealed today.

The London-based artist is scheduled to perform directly before headliner Jay-Z on the Pyramid stage at the Somerset festival on June 28.

However the unpredictable singer is far from reliable regarding performances, she pulled out of last year's V Festival and cancelled her UK tour mid-way through, claiming that she couldn't continue without her jailed husband Blake Fielder-Civi.

Earlier this month, the 24-year-old was told she would not face charges over video footage which appeared to show her inhaling fumes from a crack pipe.

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Gig: Amy Winehouse leaving her home in North London last night. She stopped briefly at her old house in east London before heading out of town

Headliner: Jay-Z will close the festival with a performance on the Pyramid stage. Many festival-goers have complained that hip-hop will not suit Glastonbury

Winehouse has since struck up a friendship with fellow singer-songwriter Pete Doherty and the pair are believed to be recording new material together.

They both recently appeared in a strange online video posted on the YouTube website, in which they both were seen talking to newborn mice.

Despite the controversy she courts, Glastonbury Festival organisers today insisted the delayed announcement of Winehouse's performance was not down to "issues to do with her personal life".

A spokesman for the festival said: "She is performing on the Saturday night, she will be the last performer before Jay-Z.

"We just wanted to make sure her team was happy with the arrangements before she was confirmed.

'It wasn't due to issues to do with her personal life."

The Grammy-award winner's appearance and behaviour have sparked concerns about her wellbeing from friends and family.

Winehouse - now worth £10 million - was admitted to hospital last August after a reported overdose of heroin, Ecstasy, cocaine, ketamine and alcohol.

Fans were shocked to see the Back To Black singer bloodstained and covered in scratches after she quit rehab with her husband.

Fielder-Civil is currently awaiting trial on charges of conspiracy to pervert the course of justice  A fortnight before she was questioned over alleged drug-taking footage she received a caution for slapping a man during an early hours row.

This year's Glastonbury Festival, held at Worthy Farm, in Pilton, will take place between June 27 and June 29.

Winehouse is also booked to headline Bestival on the Isle of Wight and perform at T In The Park and the V Festival.