Lily Allen has sacked her music management company after a problematic attempt to break the US market, according to reports.

The Daily Mirror reports that the LDN singer has fired Empire Management after her efforts to tap into the lucrative American market was hampered when her visa was revoked.

Though the permit was denied due to an outstanding assault charge against the singer for an alleged attack on a paparazzi photographer, she reportedly blames the management firm for the mix-up.

The so-called 'Queen of MySpace' hit the top spot with second single Smile and performed at this year's Glastonbury Festival and the Live Earth climate change concert.

However, her efforts to follow her UK success with transatlantic sales were hit by the visa problems, which meant her US tour last month had to be cancelled.

An insider explained that the LDN singer felt it was time for a change.

"She is still fuming about the business with her visa being revoked," the source said. "She felt it was her year to break America and blames her management for not getting it sorted out.

"It meant pulling out of the MTV Video Music Awards and also meant she couldn't carry out her promise to tour there in September."

Empire Management - which also handles The Feeling and Natasha and Daniel Bedingfield - declined to comment on Lily's decision but wished her luck for the future.

10/10/2007 12:18:00