A strong urge to get back to nature - or at least become more sustainable - has gripped clients this year. Katie Puckett and Caroline Stocks discover how 50 of the biggest spenders are focusing their pound;12.1bn combined construction budget on all things green It is vital or important to more than three-quarters of your clients. They spend millions of pounds on it every year. And they're going to judge you on your approach to it. The only problem is, they don't know what it means.
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