Ban cheap and crap foods, educate people on healthy living and promote and support it through subsidies or incentives to follow those lifestyles. Measure, analyse and evaluate how this impacts the NHS, and adjust accordingly (i.e. banning smoking etc...).
Invest more in infrastructure, with incentives, and apprenticeships that lead to paradigm shifting industry capability (such as free public transport or at least flat rate monthly payments, stimulate local businesses and help with that circular economy model). Create a world recognised centre of excellence for infrastructure and engineering, creating export capability for our innovative behaviours.
Boost STEM education at all ages and move to a more modern and diverse international baccalaureate programme rather than the antiquated system we have here. Helping people being better at critical thinking and provide better well rounded education. As well as clamping down hard on disruptive behaviours in educational establishment but allowing critical debate and challenges.