The PP and Cuidadanos have reached an agreement to introduce cuts in income tax for those on low incomes (below 18k per year) with effect from 1 January 2018. No details available as yet, but this could be helpful to many British pensioners living in Spain.
https://economia.elpais.com/economia/2017/07/05/actualidad/1499270005_370894.html
https://economia.elpais.com/economia/2017/07/05/actualidad/1499270005_370894.html