You can't work in one of the professions and be working class.
if you were a Doctor, a Judge or a Chartered Accountant and you said you were working class people would think you were a cunt.
Or in your case a chippy cunt.
Face up to it your middle class and that's it. Change your accent and live with it or pack in your job and do some shelf-stacking in a crappy discounter.
Prick.