THE UK's Information Commissioner is set to decide whether emails provided by Wendy Alexander to the investigation into her leadership campaign should be published.

The Electoral Commission, the body that decided not to refer Alexander's breach of donations law to prosecutors, believes it would be "unfair" on the Labour leader to make her evidence publicly available.

The dispute will be settled by information tsar Richard Thomas, whose recent decisions have led to embarrassing details being released on MPs' expenses.

Alexander's leadership of Labour at Holyrood was rocked last year after it emerged she had an accepted an illegal campaign contribution from Jersey tax exile Paul Green.