That's part of the problem. It won't help much in the short term but in the long term serious investment is needed up front. Of course the Tories don't give a **** about the long term.
To the Tories being more efficient is about spending as little as possible. But serious investment would actually save money in the long term. There's loads of ways the NHS could be more efficient, but proper investment up front and a long term plan (incorporating everything: social care, public health etc) developed by experts, not politicians, is what's needed.