I wouldn't blame 'loss of heritage' on any other ethic group. it is a case that the majority of "white British" are so apathetic about our own heritage and traditions, whereas other cultures embrace their heritage and customs.

In terms of major customs, e.g. Christmas, Easter, the have become so commercialised, and I would predict that more people are interested in what is on television in the evening, than looking at either the religious significance, or even the older secular traditions.

If anything, the biggest loss of heritage, in my opinion, was in the first half of the twentieth century, with many customs being revived post-war, and I would argue that our heritage is more alive now than it was 60 years ago.