The 2018 programme of speakers was added to the site in December 2017 as a notice. The then current programme (2017) was left in place as it was still active. In January 2018 this should have been replaced, but I forgot. I have now noticed and corrected the situation, with help from Janice. The programme is still in the December archive, if you have got used to looking for it there, that will still work, but you can now also find it where it should be.
We used to keep an archive of all the past newsletters on the web site, but have had to discontinue this due the space needed. All the past newsletters (with a couple of exceptions) are still available in machine readable form, (mostly PDF, some in HTML), and can be made available for research purposes on application to the webmaster. This archive also contains details of past speakers.