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The latest on whether Meghan Markle's father will attend Saturday's royal wedding dominates many of the newspaper front pages for a second day in a row.

An updated edition of the Sun leads with a report that Thomas Markle is to have heart surgery today, ruling him out of attending her wedding to Prince Harry "once and for all".

He reportedly blames his son for the setback, the Sun reports, saying Thomas Jr triggered his heart attack by writing an open letter urging Prince Harry not to go ahead with the wedding.

The story is also the lead for the Daily Mirror, which says the 73-year-old is too ill to walk his daughter down the aisle.

"Millennial Railcards Hit Buffers" is the headline on the front of the i newspaper. It reports that a key Tory pledge to win over younger votes has been "derailed" by a Cabinet row over how it should be funded.

The i says ministers are refusing to pay for the scheme despite a promise from the chancellor that millions of travellers will be offered discounted fares in the form of a 26-30 railcard. The Treasury says it is still committed to the scheme.

Conflict of interest?

A call by MPs for the big four accountancy firms to be referred to the competition regulator is the main story for the Financial Times and the Guardian.

The FT says the recommendation - made by two parliamentary committees in a report on the collapse of Carillion - comes amid calls from watchdogs and policymakers for the auditing giants to be broken up.

The FT's LEX column says it's an "anomaly" that auditors are paid by the organisations they scrutinise and that lucrative consulting work represents a "clanging" conflict of interest.

Meanwhile, the deputy governor of the Bank of England has told the Daily Telegraph the British economy is entering what he calls a "menopausal" phase.

Ben Broadbent explains the metaphor as meaning the economy is no longer potent, and awaiting a breakthrough. He compares the current situation to that of 19th century Britain, when the steam era was over but the age of electricity was yet to begin.

The Daily Mail has a contrasting front page with the headline "Brexit Britain's booming!" It says the predictions of "Remain doom-mongers" have been thwarted by employment figures, which were released on Tuesday, showing a record 32.3 million people are in work.

The Mail's leader column calls on Britain to use its "considerable leverage" to extract a generous Brexit deal from Brussels.

On Brexit, the Times reports that Brexit Secretary David Davis has warned Theresa May that her favoured post-Brexit customs arrangement may be illegal.

He is said to have raised the concern in a letter to the prime minister setting out his opposition to the proposal, with the backing of other Brexit-supporting cabinet ministers.

Sleep study

And several papers give their take on the announcement of a Brexit White Paper which is to be published ahead of a European Council meeting next month.

The Financial Times believes it is an attempt by Theresa May to get "on to the front foot" in negotiations with Brussels, albeit with the significant hurdle of getting a warring cabinet to decide what should go in the document. The Guardian says the PM risks embarrassment if she can't get agreement on her priorities.

The Times leads on a major study linking disrupted sleep to depression. The research, published in the The Lancet Psychiatry journal, found people who roam the house after dark checking their social media and watching TV are more likely to suffer from neuroticism and mood disorders and rate themselves as less happy and more lonely.

The study's author advises a 22:00 GMT cut-off for mobile phone use and says there is truth in the old adage of "early to bed, early to rise, makes a man health wealthy and wise".

And the Daily Telegraph reveals how researchers have solved a long-standing mystery surrounding the diary of Anne Frank.

The contents of two pages have been hidden and sealed with a covering of brown paper by the 13-year-old when she was writing in September 1942. But digital photographic techniques have revealed what's underneath: her musings on sex, and some somewhat risque jokes.