The Guardian has reported that journalists at the Telegraph have been ‘provisionally cleared’ by an internal investigation reportedly being carried out to look into how taped recordings of Vince Cable “declaring war” on Rupert Murdoch were picked up by the BBC.

Some of the comments made by the business secretary in relation to News Corporation’s bid for BSkyB, which were recorded by undercover reporters from the Telegraph and had not been published by the paper at the time were instead reported by BBC business editor Robert Peston on his blog.

According to the Guardian the inquiry, which it claims was being carried out by private investigation firm Kroll, has “initially concluded that none of the paper’s editorial staff were involved in the leak of the explosive recording”.

The Telegraph Media Group previously told Journalism.co.uk that it does not comment on internal security matters.

The Press Complaints Commission is currently investigating the ‘use of subterfuge’ in the Cable expose, under Clause 10 (Clandestine devices and subterfuge) of the Editors’ Code of Practice.