9 Property, plant and equipment

GroupLand and
buildings
£m
Infra-
structure
assets
£m
Operational
assets
£m
Fixtures,
fittings,
tools and
equipment
£m
Assets in
course of
construction
£m
Total
£m
Cost
At 1 April 2014272.14,555.75,927.2482.6926.412,164.0
Additions8.4112.891.019.9496.4728.5
Transfers27.2219.9273.018.3(538.4)
Disposals(4.1)(0.4)(27.2)(33.6)(65.3)
At 31 March 2015303.64,888.06,264.0487.2884.412,827.2
Additions4.598.0106.37.4449.6665.8
Transfers19.1134.8156.511.1(321.5)
Disposals(0.3)(0.1)(47.2)(7.6)(55.2)
At 31 March 2016326.95,120.76,479.6498.11,012.513,437.8
 
Accumulated depreciation
At 1 April 201483.4239.82,230.8291.52,845.5
Charge for the year15.935.4233.239.1323.6
Disposals(3.8)(22.6)(31.8)(58.2)
At 31 March 201595.5275.22,441.4298.83,110.9
Charge for the year9.034.6249.639.3332.5
Impairment11.411.4
Disposals(0.3)(0.1)(42.2)(5.8)(48.4)
At 31 March 2016104.2309.72,660.2332.33,406.4
 
Net book value at 31 March 2015208.14,612.83,822.6188.4884.49,716.3
Net book value at 31 March 2016222.74,811.03,819.4165.81,012.510,031.4

At 31 March 2016, the group had entered into contractual commitments for the acquisition of property, plant and equipment amounting to £439.0 million (2015: £394.5 million).

In addition to these commitments, the group has long-term expenditure plans which include investments to achieve improvements in performance required by regulators and to provide for future growth.

Company

The company had no property, plant and equipment or contractual commitments for the acquisition of property, plant and equipment at 31 March 2016 or 31 March 2015.