Ordinary shares of 1p each:2018
Number of shares
2018
£000
2017
Number of shares
2017
£000
Allotted, called up and fully paid199,116,6321,991199,116,6321,991

During the current period the Company has not changed its share capital. There has been no change in share premium, which has remained at £151.0m (2017: £151.0m).

In total the Company received proceeds of £0.1m (2017: £1.4m) from the exercise of share options.

Potential Issue of Ordinary Shares

The Company has five employee share option schemes, three of which were set up following the Company's flotation, and the MSP and RSP-SMP which have been set up in the year. Further information regarding these schemes can be found in Note 23 to the Group's financial statements.

Investment in Own Shares

At 30 March 2018 the Company held in Trust 2,060,363 (2017: 2,097,863) of its own shares with a nominal value of £20,604 (2017: £20,979). The Trust has waived any entitlement to the receipt of dividends in respect of its holding of the Company's ordinary shares. The market value of these shares at 30 March 2018 was £6.7m (2017: £7.4m). In the current period nil (2017: nil) were repurchased and transferred into the Trust, with 37,500 (2017: 886,426) reissued on exercise of share options.