Right, the UK generally doesn't have cash bail, and the most recent noteworthy example where cash bail was used (Julian Assange) the accused did not in fact surrender and those who stumped up the money for bail lost their money, suggesting it's just a way for people with means to avoid justice.

The overwhelming majority of cases bailed in the UK surrender exactly as expected, even in cases where they know they are likely to receive a custodial sentence. Where people don't surrender I've been to hearings for those people and they're almost invariably incompetent rather than seriously trying to evade the law. Like, you were set bail for Tuesday afternoon, you don't show up, Wednesday morning the cops get your name, they go to your mum's house, you're asleep in bed because you thought it was next Tuesday. Idiots, but hardly a great danger to society. The penalty for not turning up is they spend however long in the cells until the court gets around to them, so still better than the US system but decidedly less convenient than if they'd actually turned up as requested.