Uber isn't the same everywhere
UK Uber drivers have to be licensed to carry fare-paying passengers. That comes with its own background checks.
Whilst some might sing the praises of black cabs, 1: they're expensive, 2: many of the drivers are utter wankers when it comes to consideration for other road users and 3: Even though it's illegal to refuse a fare, it's not hard to find that "going south of the river" late at night is a no-go.