Raw materials and consumables4,9034,067
Work in progress1,9721,458
Finished goods and goods for resale35,05133,913

In 2017, inventories of £115.5m (2016: £100.0m) were recognised as an expense during the year and included in cost of sales. Inventories have been written down by £1.7m (2016: £1.2m) in line with the Group's stock provisioning policy. Such write-downs were recognised as an expense during 2017. No significant specific stock provisions have been reversed in the year.

No inventories are pledged as security for liabilities.

The carrying amount of inventories carried at fair value less costs to sell is £0.6m (2016: £1.0m).