According to the findings of Brewin Dolphin Securities, 3.4 million Britons are considering making ethical investments in the next 12 months.
The study from the UK's largest portfolio manager shows that mature investors, along with investors based in London, feel the ethical urge stronger than their more youthful counterparts.
Around 12 per cent of over-65s and the same proportion of Londoners plan to make money morally - almost double the national average (seven per cent).
"This research confirms that there is a high level of interest amongst investors for opportunities to invest ethically and responsibly," said Charlotte Black, director of corporate affairs at Brewin Dolphin Securities.
Investments with moral fibre are not necessarily made at the expense of profits either – figures released by Co-operative Insurance suggest ethical investment funds have outperformed most UK unit trusts since 2002.
Around £10 billion of investments are currently considered "ethical" in the UK.To read more about investment, click here.
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