In 2009, the London Mathematical Society and New Zealand Mathematical Society agreed to set up a new lectureship which is named after Professor A. Aitken, one of New Zealand’s great mathematicians.

The Aitken Lectureship occurs every two years (in odd-numbered years) when a mathematician from New Zealand is invited by both Societies to give lectures at different universities around the UK over a period of several weeks.

http://www.lms.ac.uk/events/lectures/forder-and-aitken-lectureship