I don't believe there is a consensus for that. Many of us have immigrant ancestors, have married immigrants or have immigrant relatives. Britain is a mongrel nation, always has been. What we seem to have at the moment are lots of politicians and the media pushing an anti-immigrant agenda.
and no one getting airtime to promote the benefits of immigration, and how we all gain. And also, there are no major figures out there speaking some home truths about what will happen to our economy if we continue to demonise those that come here to work, to live and to seek a better life.