It is estimated that up to 300 people have been left out in the cold by a major restructure of the Broadway Centre in Shepherd's Bush over the past few months.
More than half of them are Polish, many who have been badly hit by the lull in the construction industry, leaving them destitute, with no money to return home and no family here.
The National Lottery and the Royal Borough of Kensington and Chelsea ceased funding the project, forcing the centre to streamline its resources. It lost £70,000 from Kensington and Chelsea alone.
Rough sleepers can no longer drop in to socialise or take part in music and art groups, which gave them a fun and creative outlet, as all have been cut.
The soup kitchen has also been axed.
A spokesman for the centre said the restructuring was designed so resources could be better directed to the most needy areas, which were previously intimidated by the large number of people who swamped the venue in Market Lane.
He said: "We have in the past generally had an open door policy but we were finding that we could never really know if the people we really set out to help were getting it. So now we are trying to focus on them.
"There are other places that can provide food and shelter for those who would previously have come to us and we make sure they know that."
Bruce Maquart, a project manager at the homeless charity the Upper Room in Shepherd's Bush, said its Polish clients were the most destitute.
He said: "Since May, we have noticed a difference. There have been layoffs in the industrial sector, and more and new people are coming.
"There has been a general decline of about 20-30 per cent of Polish people coming to us, mostly because many have gone back to Poland, but those who have stayed are the most destitute."
The Barka Bus, which provides free coach travel to Polish people