I hope I am not repeating something earlier in this thread....

To culture = to cultivate

Therefore by definition, a culture is not what something used to be, but something that is now, by an on-going process of refinement and cultivation..... a culture is something that is made, grown.

Therefore, English culture is what we have made 'Englishness' today, but it would be arrogant to say there is one English culture, as local cultures form independently (rural vs urban, city vs market town wealthy 10% vs poorest 10% etc.) It is a sad that many cultures are converging into being defined by identical shopping malls, out of town retail parks, fast food shops, etc.)