I don't think the UK does it much, except in the sense that if you lose a case you're liable for costs, and for a driving offence judges are more likely to apply a statutory criminal fine.
Smaller offences have an upper fine limit, and that won't be raised based on income. But it's always bigger than the token Fixed Penalty Notice fine you get from the police. Serious offences have unlimited fines, so judges can get more creative with financial penalties.
https://en.wikipedia.org/wiki/Day-fine
I don't think the UK does it much, except in the sense that if you lose a case you're liable for costs, and for a driving offence judges are more likely to apply a statutory criminal fine.
Smaller offences have an upper fine limit, and that won't be raised based on income. But it's always bigger than the token Fixed Penalty Notice fine you get from the police. Serious offences have unlimited fines, so judges can get more creative with financial penalties.