The conference was held at the Business Design Centre in Islington.
That's not the Domain Summit, that's some textiles trade show that was on at the same time. The Domain Summit was in a room about the size of four tennis courts two floors up from this.
The audience was mainly comprised of what are now called "domainers": people who buy domain names to sell to people who want to use them. In the past, these unnecessary middlemen (they're almost all men) used to be called "cybersquatters", but that's now a term reserved for people even the domainers don't like.
Anyway, I know nothing about domain name sales, so gave my presentation about names in games. You can read it at https://mud.co.uk/richard/DomainSummit.pdf if you want to learn how little about that subject I know, too.
After the talk, I was accosted by a Ukrainian man who wanted to show everyone a photo of a croissant with ice cream on top of it, called the Boris Johnson.
Ah, I do miss speaking at conferences.