Shares in
subsidiary
undertakings
£000
Cost
At 1 July 2014254,309
Additions40,351
At 30 June 2015294,660
Impairment
At 1 July 201412,244
Charge for the period
At 30 June 201512,244
Net book value
At 30 June 2015282,416
At 30 June 2014242,065

A list of subsidiary undertakings is given in note (xii).

During the year, the Company invested in Dechra Finance Limited, a wholly owned subsidiary incorporated in England and Wales.