British culture is evolving as it always has done ever since humans have lived here. Ancient Britons, Romans, Anglo Saxons, Vikings, Normans, Jews, Irish, African, West Indian, Asians and most recently from continental Europe.
It is evolving at a faster pace now because the planet is more connected through technology than it has ever been. I'd like to think that I would be accepted in any country of the World that I chose to live in and have the freedom of choice where and of course there are millions of people of British heritage throughout that World.
I think the idea that British culture is somehow being lost is a bit of a myth, Christianity is receding naturally in the same way that smoking is, people are more informed about it.
This is the fundamental mistake that most liberal progressives make.
They assume that because Britain is prosperous, welcoming and tolerant of others views, that other nations are the same.
Historically we live the most tolerant and diverse society in history, yet still it is seen as an evil racist patriarchy by those who chose to believe the mainstream media.
That tolerant society will disappear if we don’t defend what made this country that way in the first place.