First of all, I agree with the fact that immigration is a problem, not only in the UK.
I read your post but I failed to see what point you are trying to make and I think you are looking at the immigration matter the wrong way. I came to the UK to study and get some work experience and obviously learn English and get back to my country (France). I started with a small british company who needed someone with my skills and who speaks french fluently. I've been here for 7 years working and paying taxes. I could got back and have a great job and life in France. BUT here is the thing... and it's like this for many of us immigrants (not all I agree and I will go to that later).
As time passes, we get to meet people, maybe a relationship, make friends, socialise, you get a gym card ...etc
while in the meantime, your friends back home have moved on, got married, had children... so basically you start growing roots here and it as you grow older and build a life here, it's not easy to just live all of that behind and go back to your country or another one for that matter. so, you stay. I think many immigrant feel that way and are not here just to milk your country dry (British tax-efficiency specialists firm and large corporations, banks and the super-rich are doing that through taxe evasion and other profit hiding schemes).
Anyway, some of the things you wrote just doesn't make sense to me. First of all, if your flatmate were noisy it's because they are noisy, not because they are polish. I'm not going to judge your action on cutting the cable, I just hope you'd've done the same if they were english.
secondly, these noisy people came to your country legally. England is a democracy and the people (the poor are the majority) have voted for an opening of the borders, free trade.... So, immigrants are allowed to come to england and BP, BHP Billiton, and other massive uk corporations are allowed to go and exploit the resources, the people, pollute the environment of the countries these immigrant are coming from.
also, the UK is a country where the concept integration doesn't exist. this is a country of communities. No mix. There is no political intention to integrate the immigrants. immigration in the UK is an economical immigration, meaning there are not here to integrate, contribute or add there genes to the kingdom, no.
The immigrants are here to work highly skilled uncool jobs that young british think are uncool, boring, and don't want to study them anymore (thanks to the british pop culture that denigrate the intellect) AND the hard unskilled jobs AND in both case to drop/keep the wages as low as possible so that the riches british upper class people get more. the upper class to which the poor lower class people aspire to (the poor, the majority of the population, do so by voting for parties that promote free-trade, basically labour or conservative)
I am writing about class here, in reality there are only two category of people in a free trade system: exploiter and exploitee
the reason you think their is to many immigrants and that their are basically a problem is because your are a victim of the system. YOU are the exploitee. The exploiters of this country do not agree with you, yet you and the other victim of the system vote just like them... why? because all of you dream that one they you as well will be in a position to exploit other people labour.
So, either you accept the fact that you are an exploiteer, and that you have to work your way up and get rich to become someone who uses the system at his advance (exploiter) or you stop voting for parties that promote free trade. Either way stop blaming the immigrants.
oxon: "London currently, immigrants have absolutely no respect for local feelings anymore"
immigrants have as much respect for the uk as the uk corporation have for their countries. There is no such thing in a liberal freemarket system as "respect for local feelings". also, "To be respected you have to be respectable."