|Due within one year:|
|Trade debtors (i) (iii)||243,604||305,107|
|Derivative financial instruments||699||472|
|Corporation tax debtors||1,956||1,111|
|Due after one year:|
|Deferred taxation (ii)||5,937||14,106|
|Deferred taxation arising from:|
|Accelerated capital allowances||621||(4,708)|
|Derivative financial instruments||22||1,060|
|Post employment benefits||5,184||7,456|
|Tax losses carried forward||-||869|
|Other timing differences||110||9,429|
(i) Trade debtors are stated net of a provision for impairment of €3.4m (2014: €7.7m).
(ii) The Group has not recognised deferred tax assets of €2.0m (2014: €1.5m) on the basis that there is insufficient evidence that these assets will be recoverable. Deferred tax assets are expected to reverse in greater than one year.
(iii) The Group also manages credit risk of trade debtors through the use of a number of sales or debtor arrangements. Under the terms of these agreements the Group has transferred substantially all of the credit risk which are subject to these agreements. Accordingly €41.4m (2014: €nil) of trade debtors have been derecognised at year-end.