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## 19. Trade and Other Payables 

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(i) Construction contract-related payables include billings in excess of costs incurred together with advances received from customers in respect of work to be performed under construction contracts and foreseeable losses thereon. 

Other than deferred and contingent consideration, the carrying amounts of trade and other payables approximate their fair value largely due to the short-term maturities and nature of these instruments. The fair value of total contingent consideration is €141 million (2011: €50 million) and deferred consideration is €156 million (2011: €101 million). There have been no significant changes in the possible outcomes of contingent consideration recognised on acquisitions completed in 2011 or prior years. 

## 20. Movement in Working Capital and Provisions for Liabilities 

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