Latest updates: PM and Labour leader face off in final prime minister’s questions before voters head to the polls

George Osborne, the Conservative former chancellor, has come out in favour of banning smoking over the long term, and taxing orange juice, to promote public health.

He proposed the ideas – neither of which have much chance of featuring in the next Conservative manifesto – in evidence to the the Times Health Commission, a year-long project to investigate ideas that would improve health and social care.

Since the dawn of states, [the government] has regulated certain products and medicines, and made certain things illegal. I don’t see why you can’t do that in a space such as food. Food’s been heavily regulated since the 19th century.

Of course you’re going to have lots of problems with illegal smoking, but you have lots of problems with other illegal activities. It doesn’t mean you shouldn’t try and ban them and police them and make it less readily available. I thought that was a compelling public health intervention.

We’re making sure that we stop those sort of cold calls and those spoof text messages that pretend to be from somebody else, that’s the first thing.

The second thing we’re doing is we’re making sure there’s more ability for the police to pursue fraudsters and that’s where the national fraud squad with 400 new investigators and a new national fraud intelligence unit comes in. That’s a huge development.