How to deal with a society based on a class system?
I think it is this localism that fosters an urge in locals to 'protect' their surroundings and this means resisting change, especially progressive ideas. The British class system is a good way to facilitate a resistance to change in those rural areas. It is very complicated as to why. Rural villages and their inhabitants prefer to be kept in a time-locked stasis where any subtle change is very noticeable and met with extreme caution.
The class differences are not greater in rural or urban areas, just different. For example, in rural areas they manifest as accent, appearance, house type (detached, semi, terraced), schooling (state or private), postcode and job as probably the last. It might seem strange to place job as the last and least important in this list of criteria but in rural locations, if you own a large sized home on land but work in a local shop or post office, you are materially middle class. I will stop here as more description will lead to cultural cliche and stereotypes.
In the urban case, class is first about accent and salary in second place. Those rural criteria often cannot be applied to city workers because they transcend them. Strangely, if the shop worker I describe was placed into a city environment, they would be seen as lower class 'peasantry' by a city worker. Why? The reasons are complex. Again, it is scale dependent, relative, depending on location.
Better is also a relative term. I'd argue no class is better than another class as they each offer a different but equally interesting set of both positives and negatives. This is why I argue against the class system in my original post because I see it as completely redundant and outdated societal structure that is holding British society back.
'Loathing anything British'. This is a strong statement. There may be some things which the middle class in Britain enjoy and some things which they do not. I'd argue, on balance, there are more things which they don't enjoy which are British than those things which they do enjoy. The middle classes seem inclined to constantly 'transcend' ideas of Britishness in a nationalist sense, but only because those are where the class system struggle is most obvious and frowned upon. I think an individual is allowed to loath if they choose. What they choose to loath is a matter of subjective preference. From an ethical perspective, to force ideas of loathing anything British onto others is facist. Sadly, this happens in Britain too.