The survey comes as the Department for Innovation, Universities and Skills (Dius) begins a new "graduate talent pool" as part of its internship programme.
BBC: Students fear harsh jobs market
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Dius is also considering proposals to create two funds to encourage venture capitalists to invest in small high-tech companies by matching their investment with public funding.
BBC: Ministers' ?1bn UK science plea
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They are telling ministers and officials at Dius that additional spending on research grants or post-doctoral fellowships could help ensure that the UK retains talent for when the economy picks up.