If you are interested in reading an eloquent defence of 'Britishness' you can look no further than the link below.
Drunkenness is a Britishness problem not an economic one | ResPublica
Indeed it says something else to me. That identity - be that national or regional or family or whatever - is vital to the psyche of individuals. Without this sense of a greater self enveloping and supporting the individual self society breaks down and individuals are lost to a downward spiral of reduced aspirations and bad lifestyle choices.