2017 | 2016 | 2015 | |||||||||||
$M | $M | $M | |||||||||||
Basic earnings: | |||||||||||||
Net income | 11.5 | 21.9 | 16.1 | ||||||||||
Adjusted earnings: | |||||||||||||
Accounting charges relating to acquisitions and disposals of businesses | |||||||||||||
Unwind of discount on deferred contingent consideration from acquisitions | 0.2 | 0.4 | 0.4 | ||||||||||
Acquisitions and disposals (Note 5) | (1.3 | ) | (0.2 | ) | 2.0 | ||||||||
Amortization on acquired intangibles | 1.2 | 1.0 | 1.4 | ||||||||||
IAS 19R retirement benefits finance charge | 1.8 | 2.1 | 3.0 | ||||||||||
Profit on sale of redundant site (Note 5) | (0.4 | ) | (2.1 | ) | — | ||||||||
Changes to defined benefit pension plans (Note 5) | — | (0.6 | ) | (18.0 | ) | ||||||||
Restructuring and other expense (Note 5) | 21.6 | 2.2 | 22.4 | ||||||||||
Other share based compensation charges | 2.2 | 1.4 | 1.3 | ||||||||||
Impact from U.S. tax reform | (6.0 | ) | — | — | |||||||||
Income tax thereon | (3.2 | ) | (1.4 | ) | 0.9 | ||||||||
Adjusted net income | 27.6 | 24.7 | 29.5 | ||||||||||
Weighted average number of £0.50 ordinary shares: | |||||||||||||
For basic earnings per share | 26,460,947 | 26,443,662 | 26,918,987 | ||||||||||
Exercise of share options | 541,223 | 270,997 | 453,736 | ||||||||||
For diluted earnings per share | 27,002,170 | 26,714,659 | 27,372,723 | ||||||||||
Earnings per share using weighted average number of ordinary shares outstanding: | |||||||||||||
Basic | |||||||||||||
Adjusted | $ | 1.04 | $ | 0.93 | $ | 1.10 | |||||||
Unadjusted | $ | 0.43 | $ | 0.83 | $ | 0.60 | |||||||
Diluted | |||||||||||||
Adjusted | $ | 1.02 | $ | 0.92 | $ | 1.08 | |||||||
Unadjusted | $ | 0.43 | $ | 0.82 | $ | 0.59 |