The article itself is a load of fucking shite and the comments afterwards depressing.
This whole notion of not having a voice - groan. It has never been easier for people to have a 'voice'. Using it constructively and eloquently is what is beyond your capabilities.
Immigration has not eroded British culture. What you perceive as being British culture is a set of antiquated values that have simply diminished with each more modern and progressive generation. The only threat to British culture (a ridiculous notion and by that term you probably mean English culture) is the influence of American culture which is effectively establishing a worldwide hegemony.
Immigration - the big debate.