What source can you cite that shows that children in poverty primarily source their calories from soft drinks/soda and now will be at greater risk of nutritional deficit specifically as a result of this tax?
Food poverty is clearly related to cost of living issues and social inequity all greatly exacerbated by Brexit, not a tax on sugar.
This site provides data and resources for more information.
If he’s made himself the only validator in Perimeter then he may well get the last laugh in death.