Susan Boyle has vowed to perform on the Britain's Got Talent tour for her fans.

It had been feared the 48-year-old would miss the tour this month after she was admitted to The Priory with exhaustion.

But Boyle was released from the London clinic at the end of last week.

She told the Daily Mirror: “I’d hate to let my fans down. They put me in this amazing position and I owe it to them as a mark of thanks.”

Boyle is now expected to join the other Britain's Got Talent finalists on the summer tour, which gets under way in Birmingham on June 12.

Susan semed in good spirits during a post-Priory shopping trip (WENN.com)

Meanwhile, the singing sensation is also believed to have signed a deal with Ossie Kilkenny, who masterminded U2's career.

There has been huge demand for Boyle to release an album after she became a worldwide star via the talent show.