A spy chief’s intervention in a row over security after Brexit, warnings over legalising cannabis and a minister’s call to confiscate mobiles at the school gates lead some of Wednesday’s papers.

The Duchess of Sussex also appears on many of the front pages after she made her Ascot debut with Harry.

The head of GCHQ, Britain’s communications surveillance agency, made an unprecedented intervention on Tuesday in a dispute with Brussels over intelligence sharing after Brexit, The Times reports.

Jeremy Fleming said Britain had supplied crucial information to help break up terrorist operations in four European countries in the past year, The Guardian reports.

The Daily Mail leads with warnings by NHS chief executive Simon Stevens against inadvertently introducing new risks for people by legalising cannabis, after former Conservative leader William Hague suggested the Class B drug could be legalised for recreational use.

And in the Daily Telegraph, Culture Secretary Matt Hancock calls for children to have their mobile phones confiscated at the start of the school day.

In other news, the Financial Times says increasing acrimony between the US and China over trade has led to a sharp sell-off in Chinese shares, affecting global markets.

The i says a Europe-wide shortage of carbon dioxide gas could affect the production of beer and soft drinks.

Former health minister Norman Lamb has claimed government officials tried to avoid an inquiry into the suspicious deaths of 833 patients at a hospital, The Independent reports.

The Sun says 21.3 million people watched England beat Tunisia 2-1 in their World Cup opener, outstripping the wedding of the Duke and Duchess of Sussex.

And the Daily Express says figures suggest around 23 million people will need to keep working beyond retirement age due to the cost of living and low returns on savings.