The charity Childline says its Nottingham office is getting hundreds of calls a week in the Midlands from teenagers suffering exam stress.
It's urging students who are feeling anxious about their GCSEs to get in touch.
Last year, the charity received more than 1500 calls from young people under 18 who were worried about their exams.
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Six Polish men were found at the two businesses, some living at sites, they are thought to have been paid around £1 an hour.
Tahir Mahmood was detained by Police as he was attempting to climb into the roof space of an out-building at his family’s home.
Family man Mr Javeed was the owner of Digbeth business Direct Source 3 and was shot and killed on February 3.