The programme 2019 is:
March 9th NEW The Practical Astronomy Show http://practicalastroshow.com/
April 10th Talk at Hertfordshire Astronomical Society
April 24th Talk at Chester Astronomical Society
Watch this page for updates.
If you or your club are arranging an event, let us know as we may be able to attend. John would be happy to give a talk eg 'optical quality and unobstructed systems', 'improving your telescope to suppress glare', 'introduction to astronomical spectroscopy' or 'the 21st century amateur observatory', (other titles available soon ) for club and society meetings.