I don't really think class matters to many people these days; my parents were definitely working class (mother's first job was as a domestic servant and father's a milkman) However they both studied at night school and got better jobs and saved up to buy their own home. Once they were property owners and had professional jobs they were regarded as middle class, though my father always said he worked, so he was working class.
Maybe socio-economic group is more relevant nowadays. We tend to mix with people like us because that is who we meet on a day to day basis. Our neighbours are broadly from the same sort of background as we are and probably are in a similar income bracket. We do have one friend who is titled (the daughter of an earl). She is very kind and you would never guess her background, so posh people aren't all bad
Washing bio gel or quid in the drum