Table:
|  | 2019 | 2018 |
| --- | --- | --- |
| Profit attributable to equity shareholders (£m) | 166.6 | 223.1 |
| Weighted average shares (million) | 73.7 | 73.6 |
| Dilution (million) | 0.2 | 0.2 |
| Diluted weighted average shares (million) | 73.9 | 73.8 |
| Basic earnings per share | 226.2p | 303.1p |
| Diluted earnings per share | 225.5p | 302.0p |
Paragraphs:
10 Earnings per share
Basic and diluted earnings per share calculated on an adjusted profit basis are included in Note 2.
The dilution is in respect of unexercised share options and the Performance Share Plan.
Question:
On what basis is the basic and diluted earnings per share calculated on?
Answer: an adjusted profit basis