British culture is defined as much by what it is as what it isnt.
It isnt the EU, UN, WTO consumerism, Islamism, German culture etc etc ad infinitum.
So what is British culture ;
British culture is the sum total of the organic, endogenous folk cultures of the folk nations of the British Isles. Culture derives from the Latin cultura stemming from colere, meaning "to cultivate " therefore signifying that culture is an organic manifestation of the inner nature of the people who inhabit the British nation and who create British culture. British Culture is therefore the outward manifestation of the inner nature of the British peoples. British Culture and British ethnicity are linked.
It is also the set of shared British attitudes, common values, shared goals, the common ways of life and social and community practices of the British people and the British Nation.
By Nation I refer to the concept of a nation as a body of people, the indigenous British peoples, who share a common history, culture, language, racial and ethnic origin and who have inhabited the British Isles for thousands of years.
British culture incorporates the indigenous Folk cultures and ancestral traditions of Britain - Welsh, Scottish, Anglo-Irish, Anglo-Saxon English
It also includes ;
The British Constitution
The British legal system
The English language and indigenous languages
Architecture from Stonehenge to St.Pauls Cathedral
Druidism, Odinism, the traditionalist Church of England and Celtic Christianity
British inventions and technology
This is not an exhaustive list.
I do not define culture as 'high' or 'low', working class or aristocratic - I see British Culture as a totality not as a set of social divisions.
It is the consciousness of the self as a component of the nation, an organic connection to the past and ancestors and a sense of a shared destiny in the future as regards the evolution of the nation.