Election update, 10 April: rail fares, police numbers, and volunteering

The Conservatives will reportedly promise today to give workers three days paid leave for charitable projects, provided they're employed in bigger companies or the public sector.

They'll also pledge to freeze some rail fares in real terms. That's using the 'RPI' index of inflation—we're going to be taking a closer look at what it means for commuters.

Labour will be talking about policing, with a promise to protect the number of some officers.

And the Liberal Democrats will pledge a "Help to Rent" scheme to allow younger workers to borrow money for their deposit from government.