A series of fatal stabbings in the capital, the deaths of a British family in a seaplane crash in Sydney and a warning over sugary snacks all make the front pages on Tuesday.
The Guardian leads with the four knife deaths in London over the new year period, reporting that it brought 2017 "to (a) deadly close".
The paper says the deaths of the four young men - in apparently unrelated incidents - brought the total number of fatal knife attacks in the capital to 80 across the year.
The Daily Telegraph carries a striking photograph of Emma Bowden, 48, and her 11-year-old daughter Heather, who were killed in a seaplane crash in Australia alongside Ms Bowden's fiance Richard Cousins, the chief executive of catering company Compass Group, and his two sons William and Edward.
The paper reports that the same model of seaplane, a De Havilland DHC-2 Beaver, had crashed in Canada in August 2015, killing another UK family.
The Independent features pictures of all six victims of the Sydney crash - the five Brits and the pilot, Gareth Morgan, 44.
It describes the incident as a "tragedy on (the) holiday of a lifetime".
The paper's main story is about "deeply concerning" figures on how long university students are having to wait for counselling and mental health support.
The Times, meanwhile, carries tributes to the victims of the Sydney crash, and reports that Mr Cousins had been looking forward to retirement and was preparing to marry Ms Bowden in the summer.
Its lead story reports that time-wasting patients are costing the NHS £1 billion a year.
A warning against children eating sugary snacks features on the front pages of both the Daily Mirror and The Sun.
Running with the headline "Mars Barmy", the Sun says parents are being told to limit treats for children to a maximum of two 100-calorie snacks a day - ruling out the 230-calorie Mars Bar.
The Mirror says the government advice urges parents to cut back "drastically" on children's high-calorie snacks such as crisps and chocolate.
Elsewhere, the i reports on protests due to be held at 40 railway stations following fare hikes, with the headline of "Great Train Robbery", while the Daily Mail claims that firefighters with just six days of first aid training are being sent to medical emergencies.