The American investors who have agreed to become the new owners of The Daily Telegraph have edged closer to gaining control of the newspaper by formally notifying the government of the deal.

Sky News understands that lawyers acting for RedBird Capital Partners, which will own a majority stake in the publisher if the deal is approved, submitted their detailed proposals to the Department for Culture, Media and Sport (DCMS) in the last few days.

The filing means that Lisa Nandy, the culture secretary, must decide whether to issue a new Public Interest Intervention Notice (PIIN) which would trigger further investigations into the takeover.

The notification by RedBird Capital’s lawyers should pave the way for the lifting of an interim enforcement order (IEO) imposed by Lucy Frazer, the then Conservative culture secretary, in December 2023, which prevented the acquirers from exerting any control over the Telegraph.

Insiders believe that the removal of the IEO will result in the DCMS issuing a new PIIN, which would prompt investigations by Ofcom and the Competition and Markets Authority into the £500m takeover.

A previous PIIN was issued in January 2024 when RedBird intended to buy the Telegraph titles in conjunction with Abu Dhabi state-controlled investor IMI.

Following a fraught legislative battle, IMI is now restricted to owning a maximum 15% stake in the newspapers – which it intends to acquire as part of the RedBird-led consortium.

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Sky News has already revealed that Sir Leonard Blavatnik, owner of the DAZN sports streaming platform, and Daily Mail proprietor Lord Rothermere are preparing to buy minority stakes as part of the RedBird-led transaction.

RedBird said in May that it was “in discussions with select UK-based minority investors with print media expertise and strong commitment to upholding the editorial values of the Telegraph”.

The Telegraph’s ownership has been in a state of limbo for nearly two-and-a-half years after its parent company was forced into insolvency by Lloyds Banking Group, which ran out of patience with the Barclay family, the newspaper’s long-standing owner.

RedBird IMI, a joint venture between the two firms, paid £600m in 2023 to acquire a call option that was intended to convert into ownership of the Telegraph newspapers and The Spectator magazine.

The Spectator was sold last year for £100m to Sir Paul Marshall, the hedge fund billionaire, who has installed Lord Gove, the former cabinet minister, as its editor.

In July, the House of Lords approved legislation that will allow IMI, which is controlled by Sheikh Mansour bin Zayed Al Nahyan, the vice-president of the United Arab Emirates and ultimate owner of Manchester City Football Club, to hold a minority stake.

Other bidders had tried to gatecrash the Telegraph deal, with the field of rival contenders led by Dovid Efune, the owner of The New York Sun.

His key backer – the hedge fund founder Jeremy Hosking – recently told Sky News their bid was “ready to go” if the RedBird-led transaction fell apart.

Announcing its agreement to acquire the Telegraph titles in May, Gerry Cardinale, founder of RedBird Capital, said it marked the “start of a new era” for two of Britain’s most prominent newspapers.

Mr Cardinale said after the Lords vote: “With legislation now in place, we will move quickly and in the forthcoming days work with DCMS to progress to completion and implement new ownership for The Telegraph.”

Senior Telegraph executives and journalists are said to be frustrated at the pace of the process.

None of the parties involved in the Telegraph ownership situation would comment, while the DCMS declined to comment.