This is a very interesting question because it is becoming clear that many migrants and refugees have a false idea of what living and working in Britain will be like.
Many of my family members work in areas where they work with migrants and refugees, and it is pretty clear that almost all of them have a gross misunderstanding of life in Britain and the kind of opportunities they can expect. Many seem to be under the impression that Britain is some sort of cross between the world of Harry Potter and James Bond.
DH has come across cases of refugees who are horrified by the places they have found themselves living in, and are desperately trying to be relocated -- and these are not necessarily cases where people have been housed on particularly notorious estates or anything. Put it this way, if you have spent your life in a small town or village in the Middle East and you come to live in a Northern mill town or on the outskirts of a Northern British city, the culture shock alone can be beyond immense. The experience is very isolating; you've no cultural experience of navigating certain situations or behaviours; unless you are fluent in English and can tune into local accents, you can't understand any of the vocal cues around you.
One interesting thing one of my research colleagues found was that many African migrants had a real struggle with reading maps. In many African countries, particularly in smaller towns, ordinary people do not use maps for directions. They use topographical features (go down to the large building with the metal gates, turn left until you reach the bridge etc), so when you give them a map to get somewhere, they don't know how to read it ... so they end up getting somewhere late or not turning up, which then leads to further implications down the line.
Another significant problem is inter-sectarian or inter-ethnic violence in some areas. It's not a great idea to house Kurds in largely Pakistani areas, for example, but government just sees them all as "Muslims that need access to a mosque". The upshot of this idiocy in one case was a refugee who ended up with permanent brain damage after being attacked for being "anti-Saddam". His friends were shocked; they had no idea that they could leave Iraq only to find themselves in pretty much the same predicament in Britain.
Then there was the famous case of the Iraqi interpreter and his family who ended up in a tower block notorious for drug abuse. He had no idea Britain could be like that, and just sank into a severe depression.
I know, as well, that many Poles were shocked at the cost of living in London and that is one reason why so many ended up moving to Peterborough.
Again, my grandmother volunteers with a TESOL group for refugees. She does what she can, but a lot of the refugees have no chance of ever being fluent enough in English to be able to get anything other than manual work.
The thing is that life in Britain for pretty much 80 percent of the British born population is not easy (80 percent is everyone that earns under about £40k a year). The cost of living is high, jobs can be few and far between, transport is tricky outside urban centres (ie. you'll probably need a car). I really believe the government ought to start a campaign that is honest about life in Britain for most Brits.