The UK is full of jealous people that hate success because their own lives suck so much.
I jest, but seriously it's riddled with class structure and jelousy.
Depends how you evaluate and define success, and what you admire.
Personally I admire the heck out of engineers and that kind of thing. People building mega-projects, or doing cutting edge research, or whatnot. Or even just building a road or a bridge even if it isn't necessarily the biggest or the most complicated. Software engineers, too. Lots of respect for lots of those kind of peoples.
But these guys don't normally make it "rich". The really "successful" guys tend to be doing a lot more mundane stuff, like buying and selling things. Retail empires, property empires, etc, etc. Or being the CEO du-jour of a large company, whether or not you do well you still get paid millions.
Some people have gotten spectacularly rich through fraud or other moral bankruptcy (obviously that doesn't apply to anyone here, we're all 100% on the level!)
When the argument is used (non-ironically) that people just envy success, and success is defined by money, I can't help but feel extremely sad about the world we've created. And don't even get me started about the people who had vast inherited wealth to start with. With the best possible start in life, can they really claim all that "success" is their own?
As for the UK, class structure is baked in and has been a staple in this country for thousands of years.