You won't get rich by following this tip. But you will probably feel a lot better deep inside. Triodos Bank is a European ethical bank, which is expanding at breakneck speed here in the UK by addressing a range of savers' social and environmental concerns.

For example it offers, among many types of accounts, an Organic Saver Account, which supports the development of organic farming in the UK. This pays 4 per cent gross on deposits of pounds 25,000 in a 90-day deposit account.

If you are aiming for slightly better returns, what about Green Cash Individual Savings Account, paying 5.5 per cent on deposits of pounds 10 or more? Access is on 33 days' notice. Not a bad rate of return - and it will do wonders for your conscience. Call 0500 008720.