They will need a lot of help and support, not only just housing, schooling and health but also language support, familiarisation (how to set up a bank account, access health care etc), access to adult education which will lead to jobs and independence. Many refugees come from rural societies and have little experience of living and thriving in Western developed economies.
I've worked with people who had been given leave to remain, formerly asylum seekers and refugees, many from Afghanistan, and in my experience, the government schemes put in place 20 years ago that I was working on were wildly unrealistic. Many of these people were illiterate in their own language, never mind in English, so sitting in a classroom itself was a complete mystery to them (with a few highly educated exceptions), never mind learning to read and write in a foreign language, however, with the scheme they were on they were expected to become fluent and ready for work in a matter of a few months. Many had never had jobs, or had only worked for the family - shops, farming etc - so time-keeping and other aspects of the world of work was something entirely new to them. They have come from cultures steeped in homophobia and misogyny, which may also cause problems with employability, socially, street harassment, making pests of themselves to young women etc. Many asked me how to 'get a woman' (including men who admitted they were married but it was just 'expected') and some slept with prostitutes. The majority of these migrants then and now are young men, usually around 80-90%, which makes me wonder about the poor women that have been left behind. As young men who had never lived independently, they struggled with basic self-care, cooking, hygiene etc, and needed continual support for filling in the myriad forms required to live in Britain - benefits, housing, health, taxation, tv licence, driving licence - some got in trouble for driving without licences. Of course, some will integrate and flourish, given time and enough of the right support, but we're talking about a hell of a lot of monetary investment first, and a support system that simply wasn't in place when I was working in this area. If you don't have this, what you end up with is ghettos, as can be seen in other parts of Europe where the streets are full of immigrant men but no women walking around in these areas, because they face harassment or worse. I would hate to see that happen in the UK, and so a plan for integration is needed. I of course think the UK should help those in need, but the plan has to be realistic in terms of the numbers to be let in and the kind of support they are given, and the money will have to come from somewhere. Those speaking of the EU workers who have left the UK and the foreign students no longer coming in fail to realise that these groups lived independently and were bringing money into the country and paying taxes, whereas it's likely that a lot of these immigrants will be on benefits for years. This is simply my experience, I'm not trying to demonise the migrants, many of whom it was a pleasure to meet, but people need to be aware exactly how much support they are likely to need and how much money that will cost.