Oxford has at least the first component of the Slade Lecture Series posted on eventbrite. I don't see a pathway to certificate on this one, but the series looks good: https://www.eventbrite.com/e/slade-lecture-series-an-agonistic-history-of-art-tickets-133229744753?aff=ebdssbonlinesearch&keep_tld=1 https://torch.ox.ac.uk/event/slade-professor-of-fine-art-annual-lecture-series-2021