"<Rant> IMO any sensible party would be suggesting raising the personal allowance to c. 20k and introducing a >=30% band at Median Income level, settting the higher threshold at the 90th Income Centile, substantially reducing the starting rate for additional rate, adjusting higher and additional rates to fund a 2% overall rise in income tax and NI take, and scrapping the NI upper earnings limit and also the allowance taper to get rid of the 60% trap,. </Rant>"
The whole questions of "bands " is so Victorian - there is nothing to stop them having a smooth curve for tax and benefits accessible through an app on your phone. Cut out the "cliffs" and ridiculous changes in tax/benefits when you make one extra quid......................