I don't agree with Winston's choice of words, but I would think that more would agree with him than you might think.
I'm not under any illusions about the feelings of people regarding immigration and I also agree that immigration needs to be more tightly controlled. Foreign criminals should not be getting into this country or any other. Limits should be placed on how many immigrants can enter. However, his declaration of 95% is not backed up with evidence and as we all know, these stats come from on the street polls of less than 1000 people usually.
Id hazzard a guess that your social circles consist of quite a lot of Poles, ergo your social circle are hardly going to speak negatively about mass immigration. To do so, would be considered rude.
The good thing about my social circles is that we tend to be able to talk about any subject, including immigration. I have Scottish friends who'll bring up the problems with immigration and Polish friends who will agree with them. We also manage to have these conversation without descending into argument.
Your article from the Times shows research by MORI where 975 were asked. While it shows the opinions of 975 people of voting age it doesn't show accurately the views of the nation. Without knowing more about the people asked you can't take polls seriously (not just these immigration ones - any kind) and they will be variable depending on where you ask them. Like if I stand on my front street and ask fifty passers-by if they like sunbeds I'll get a different result than if I were to stand outside a tanning salon and ask the same question. The only way to get a true account is to ask every single person in Britain aged 18 or over.
I'm not saying people in the UK don't want immigration controls to change, I'm just saying these polls can be manipulated. That's all.