It is far more difficult. Campaign finance is far more restricted, and it’s in the news if the regulator finds someone broke the rules.

The biggest problem is the revolving door, as it’s hard to prove. That definitely still exists, but you can see by where politicians do end up after political life that most are not in such a scheme.

As in the US, direct money for votes schemes basically don’t happen as they’re too easy to detect and too obviously corrupt even to the morons in the party base. There have been some recent scandals about people being paid to give speeches on certain topics. Notably, these have all been right wing politicians, but the online safety act has cross-party support.