The Daily Mail's front page headline is "Plastic bag tax in every shop", as it reports the government is planning to extend the levy on single-use plastic bags in England to all businesses.

Currently, those with fewer than 250 staff are exempt.

The Mail says Prime Minister Theresa May is also considering increasing the tax from 5p to 10p.

The Daily Telegraph says Mrs May is acting on "changing political sentiment", which it says has turned against single-use plastic bags since the effect of litter on ocean wildlife was highlighted in the BBC's Blue Planet 2.

The Sun isn't so sure.

"Why double the charge?" it asks in its editorial, pointing out the 5p rate has already successfully brought about "a massive decline" in plastic bag usage.

With a tax on disposable coffee cups also mooted, the paper says "enough is enough", warning the Tories "must end this fetish for piling new taxes on consumers".

Many of the papers set the scene for the Pope's arrival in the Republic of Ireland today.

The Daily Mirror's correspondent Rachael Bletchley describes there being pop-up Pope chairs, lollipopes and even a waving waxwork of the Holy Father for selfies.

The Financial Times reports that police leave has been cancelled, large hospitals are discharging patients in case of an emergency, and temporary morgue facilities have been set up.

But all the papers note even this huge level of interest is nothing compared to the last papal visit in 1979.

That's partly because Pope Francis's trip is taking place against a backdrop of what the Guardian calls the "dark shadow of sexual abuse by priests".

The Irish Times points out it also reflects the changing nature of Irish society, where more than 40% of people now go on to higher education.

This weekend, the country will listen to what the Pope has to say - its editorial suggests - but with a "healthier sense of perspective than it showed three decades ago."

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London's murder police have begun investigating their 100th case of the year, the Daily Mail reports - an attack on a 73-year-old woman in her home in the south-west of the city.

It is, the Times has calculated, the fastest rate of stabbings, shootings and other brutal attacks in a decade. If the rate of murders continues, the Times says, more than 150 people could be killed in London by the end of the year.

The president of the Royal College of Obstetricians and Gynaecologists, Prof Lesley Regan, writes in the Daily Express that allowing women in England to take abortion medication at home is a "major step forward".

Prof Regan says allowing women to avoid the potential pain and distress of a journey home from a clinic or hospital is the compassionate approach to take.

Finally, under the headline "Cornish nasty", the Sun reports on the "outrage" that's been sparked by a baker who is preparing Cornish pasties with the pastry crimped on the top, rather than on the side, as tradition dictates.

However, bakery owner Mikaela Parry is defiant, insisting her family have been top crimpers for decades. She has dismissed those who question her ways as "pasty fascists".

One Facebook user has come up with what seems like the ultimate insult, however, suggesting her pasties look like like "a Devon imitation".