There is an "urgent need" to increase research into inherited heart conditions as an estimated half a million people in the UK could be living with faulty genes, experts have said.
The British Heart Foundation (BHF) found the amount of people living with a faulty gene which put them at risk of developing heart disease or dying suddenly was much high higher than the previous estimate of 380,000.
The charity said that despite advancements in research, many faulty genes still remain undiscovered.
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The PM promises to double to 200,000 the number of homes built under an existing scheme aimed at easing Britain's housing shortage.
The Met Office has weather warnings in place for snow and ice until 10am in the north and west.
The plan, which would effectively strip banks of the benefit of recent corporation tax cuts, forms part of the party's election manifesto.