I'd resurface every tarmac, concrete, cobbled road in the country. To be replaced with porous asphalt. Goes some way to solving the flooding issues and fixes the quite frankly disgraceful road network.
Bring the education curriculum into the modern age and bring "living as an adult" education into the curriculum. Things such as financial planning, cooking as a must do lesson and not a GCSE choice, social skills and world affairs. Less focus on shakespeare, algebra and religious studies for example, have those three as a choice lesson.
Get rid of charity food banks to be replaced with a government assisted program accessible by all.
Every town/village with more than 500 people in it will have at least one accessible AstroTurf pitch for multi use from football to hockey and everything in between.