When we have march'd our rackets to these balls, we will, in France, by God's grace, play a set shall strike his father's crown into the hazard – Telegraph Blogs
England is more than a damp corner of a foggy island and it is more than a catalog of wars and whores. It is a culture, a set of values, and something worth believing in and fighting for. If it treats itself like an administrative unit in some polyglot empire than that is how others will treat it. Believe in yourself and make being British something hard to obtain and worth fighting for.
Osama bin-Laden said that when people get to choose between the strong horse and the weak horse they choose the strong horse. The United Kingdom can welcome immigrants while insisting that those who come truly come to join its civilization.
That is not a call for bigotry or denial of each person's individuality in appearance, food, or private worship. It is not a demand that people conform to an Established Church. It is a statement that all must respect that what makes the UK a place worth joining is that Judeo-Christian Civilization. The social, political, legal and cultural institutions it created are worthy of respect.
Similarly with the EU. If the clerks of Brussels and the Enarchs of Paris treat the British with callous contempt be temperate and look in the mirror before your response. They are only acting in accordance with their natures and in response to passivity.
When America said "No" to the pretensions of the arbitrary functionaries of Lord North it resulted in a flowering of political and economic liberty in Britain. If the UK says No to the EU it may spark a great revival on both sides of the channel.