It's not great money, but then it is a largely unskilled job. Problem is that wages are not rising in line with the cost of living. It's shift work and unsocial hours, but in that respect it's no different from working in a supermarket or McDonalds.Minimum wage should be an amount people can actually live on.
the only people for whom a job like this might be profitable, is someone sharing four to a room
Not true. I personally know a few people doing exactly this kind of job and they're all doing it as a second wage for the household. Most of them are in fact Polish, but they are working alongside English people too. Unfortunately because it's very difficult to live on just one wage these days, these type of jobs appeal specifically because it is possible to work shifts. Friends of mine often work evening shifts because their husbands are then home from work to look after the kids. Often it's the only time they can work. Personally I think it's awful because family life is being sacrificed, but that's the way it is these days.
I do think these agencies are probably profiting quite nicely out of it though.
I'm also not sure what they mean by ' excellent accommodation provided '. I'm not so sure that it does involve overnight stays. It sounds more to me like they will offer you low cost accommodation if you're prepared to move for the job, or maybe I'm reading it wrong. None of my friends do overnight stays when they work.
I think this is their website:-