Brexit, the end of short jail sentences and air pollution are on Saturday’s front pages.

Several also picture Sir Andy Murray, who announced he will retire from tennis this year after struggling to recover from a hip injury.

Leading Tory donors to the Brexit campaign have lost faith that the UK will leave the European Union, says The Times.

The i and The Independent lead with speculation that the date Britain leaves the EU will have to be delayed until after March 29.

Meanwhile Transport Secretary Chris Grayling has told the Daily Mail that stopping Brexit would risk a surge in support for far-right groups.

Jail sentences of under six months could be axed for all criminals except violent and sexual offenders, prisons minister Rory Stewart has told the Daily Telegraph.

Hitachi is close to shelving plans to build a nuclear power station in Wales, putting the UK’s energy strategy in danger, the Financial Times reports.

The Guardian leads with a study into pollution and suspected links to miscarriage.

A search for a donor heart needed by a critically-ill baby is on the front of the Daily Mirror.

And the Daily Express says promotions of unhealthy treats will be curbed as part of the fight against obesity.