The class thing is fascinating. I don't agree that Uk is the only country that still has a class system or that cares about it, I've lived in other European countries where theres definitely been an awareness and the locals "size up" people according to their class criteria. I also have family and friends living all over the world and they comment on the class systems in those countries and how the locals are about class.
USA seems mainly to go on money and how long a family has had money.
But worldwide and even in USA that's not the only indicator.
It's also parents and grandparents occupations, your own current occupation, education, accent/speech, property ownership, titles (where they exist, I know of a friend who lives in France who's been introduced to french people according to the title they'd have had if there'd not been a revolution! And that was hundreds of years ago!)
But yes it must be confusing to non Brits just as it would be and was to me the system in other countries
I agree it's hard to tell from just meeting someone unless there is a clear indicator like "may I introduce you to lord smith"
I confuse fuck out of people! Even the online questionnaires go "cannot compute" when trying to work out my class! 
I'm Glaswegian born to working class parents and grandparents (mum was a checkout girl dad was army squaddie as his dad a welder in the shipyard, other 3 grandparents working production line in factories)
I went to state schools and left at 16 with only 3 GCSEs
But over time I've improved my education, I was the first in the family to do a-levels let alone higher education! I now hold 2 degrees and hope to work for a masters in the next few years if i can manage it, (which to my 16 year old self would have seemed like chasing rainbows!) all the moving around means I have an odd accent that nobody can place, I've held a profession at one point in my working life and I've earned well at another point
But then I became ill and unable to work so that changed my circumstances but brought me into situations where certain people (who should have known better frankly) assumed because I was disabled and on benefits that meant I was lazy and thick!
So I don't know what class I truly belong in and tbh it shouldn't really matter...but in the real world sadly it does.
When people I am dealing with on various matters - from consumer to medical to financial etc - "realise" I'm well educated, they change their demeanour towards me and treat me better, all well and good for me but makes me think very poorly of them because that means they're treating others without that advantage much less well when if anything they should make more effort with them, they should certainly be acting more fairly!
Jason Manford As mentioned upthread, even aside from the show muddle class if you follow him on social media and radio etc speaks often on how different his kids upbringing is as a result of his success. He has some interesting insights on the subject as does John Bishop.
@thepeopleversuswork see I disagree I think duchess of Cambridge is and always will be upper middle class, marriage even to a royal doesn't change that
Victoria beckham even though now extremely wealthy and famous is still working class as is David. Money doesn't equal class in the Uk
@LakieLady I gotta say I used to frequent Croydon in my early 20's and loved it there but I didn't live there so maybe rose tinted glasses?
In Wales and Scotland no one I knew would go out of their way to describe themselves as a class, especially middle class
Ohhh I could introduce you to a few! Inc relatives of mine very much in denial of their working class backgrounds to the point they lie or fudge about where they grew up!
People who did the latter would get an eye roll and called a 'big I am'.
They do get this - doesn't stop them!
@Jumpalicious There are a lot of posh even titled people that are relatively poor, quite a few are asset rich and cash poor like my friend, you'd not know how posh he was by meeting him but one of oldest and longest held titles in the country (longer than some royal family) huge "pile" as the family home but he has to work quite hard to keep money coming in for the upkeep of the place, I think within a generation or 2 unless something dramatically changes for them it'll have to be sold. But he's quite "normal" when you meet him it is quite amusing when new people the penny drops, reminds me of the character in 4 weddings played by James fleet, he's totally nonchalant about it all it's other people get a bit weirded out when they learn of his circumstances.
I'm more than relieved that there isn't a 'class system' in Ireland
I'm of Irish descent with plenty family and several friends who are Irish and that's so not been my observation at all! It's more nuanced with slightly different signifiers but it's definitely there! I had 2 Irish lecturers at uni who did not get along at all and class difference was definitely a factor
That you mix with a wide range of people - as do I - doesn't change the fact
@feelingquitehopeful then how come there are class systems in countries that haven't had royalty for hundreds of years or never had royal families?
FWIW I'm a republican too but I don't think that would remove the class system not by a long way
@Helmetbymidnight I agree there are a number of posh celebrities who make out they're working class and "dragged themselves up" unfortunately for them it's so easy these days to google them and discover they went to dragon and then Eton etc worse than wc people pretending to be posh in my opinion
@WTAFIhavelosttheferret but equally there are places with large working class populations and ALSO many free art galleries and museums - glasgow for one. I dragged dd around pretty much all of them when she was little as an all day family bus ticket was quite cheap and it got us out the dingy flat in the school holidays and they always had great free kids events on
I've lived all over Uk and most places have SOMETHING like this I know because I too was dragged to almost every sodding one  chill and watch tv? Nope we're off to the local war museum (being army based there was ALWAYS some kind of war museum)
I actually think that not many people like to acknowledge luck , or fortune or privilege because its somehow insinuating they dont work hard
So true! Pisses me off when a poster on mn asserts they can be financially irresponsible if they choose because they earn well and "worked hard" to do so but are critical of a poor mner going through a rough time DARING to do something as extravagant as buy a £5 bottle of wine! Or get a McDonald's!
@ArseInTheCoOpWindow I agree that uni grants enabling many to go to uni that wouldn't have been able to before and since skews things. Oddly I was disqualified as on paper parents earned too much (dad had done well in army) BUT I couldn't go as the money wasn't actually there as alcy dad was drinking it all!
There will be generational differences