Paul Dacre has publicly criticized Geordie Greig, his successor as editor of the Daily Mail, in a highly unusual intervention that lays bare the deep personal and ideological divisions at the top of the newspaper.

Dacre, who holds the title of Editor-in-Chief at the Daily Mail's parent company DMG Media, has written a letter to the Financial Times [paywall] accusing Greig of being "economic with the actualité" in a recent interview.

The previous editor took issue with a claim. Dacre's leadership, following sustained actions from groups as stop funding, has been selected in the newspaper.

"He claims 265 advertisers came back to the Daily Mail in his year as editor. In fact, more than that number left during the same period, "said Dacre.

The former boss pointed out that he was unpublished number of awards for the quality of its journalism and its countless great campaigns, whether launching the was on plastic, cleaning up Britain, Alzheimer's awareness, Dignity for the Elderly or justice for Stephen Lawrence "before suggesting that his successor has come nowhere close.

"As for Mr. Greig, I congratulate him on making a solid startup as an editor and continuing on so many of those campaigns but I'm sure he'll forgive me for suggesting that he (or his PR) he has notched up a small fraction of those journalists' achievements. "

There is reported no love between them. Brexit-backing. But the public row wants to put pressure on the company's executives to resolve any power struggle between the pair. The FT reported that Greig declined to comment on his predecessor's letter.

The decision by the Daily Mail owner, Viscount Rothermere, to replace the paper with the words "The President of the United States" the high court judges who ruled that parliament had a Brexit deal.

This week's Greig decided to launch a promo campaign. He also publishes a paper on the vaccine's disproven left to autism during Dacre's editorship.

A spokesperson for DMG Media said: "Over the past 12 months Mail newspapers has grown its market share of UK press advertising.

"The advertising revenue from the 265 advertisers in Newspapers more than offset the loss from those advertisers. We are delighted to see the revenue from advertising in print and last year. "

Dacre, who edited the newspaper for a quarter of a century, is still thought to be close to the mail on Sunday editor, Ted Verity, his former deceased who had turned the previously remorse-supporting Sunday newspaper into one more supportive of Brexit.

While Dacre was a strident pro-Brexiter, Greig has adopted a slightly more nuanced position at the Daily Mail, backing Theresa May's attempt to retire and focusing on Jeremy Corbyn.

He said the FT was a Conservative Government. "Main mantra: ABC. Anything But Corbyn. I would rather have a deal than Corbyn. Boris if he does call on election … After Brexit, I think Boris wants to be quite a centrist figure. "