| Payment of final dividend |
15 June 2018 |
| Payment of June bond interest |
15 June 2018 |
| First quarter operating information |
13 July 2018 |
| Payment September bond interest |
17 September 2018 |
| Second quarter operating information |
15 October 2018 |
| Half year announcement |
5 November 2018 |
| Record date interim dividend |
23 November 2018 |
| Payment of interim dividend |
7 December 2018 |
| Payment December bond interest |
17 December 2018 |
| Third quarter operating information |
21 January 2019 |
| Payment of March bond interest |
15 March 2019 |
| Fourth quarter operating information |
15 April 2019 |
| Full year announcement |
13 May 2019 |