If possible, I'd fancy support for the video/webinar using https://webinarninja.com/. Source: over 3 years ago

Far stronger, has better AP, and more durable, then Spiderman, hell Ascension has better strength and durable feats then Spider Man. Source: about 1 year ago

To ensure easy access and make this conference affordable for students, Life and Space will be held online the Hopin platform. The cost of attendance is only $9. Source: over 1 year ago

Hopin is a video conferencing application that specializes in supporting large virtual events for up to 100,000 participants. Hopin's video chat features include audience polls, quizzes, and Q&A sessions during live virtual events to keep attendees engaged. Users can also store and edit recorded video footage and gain deeper insight with the platform's built-in analytics. - Source: dev.to / over 1 year ago

I've looked into the UK multiple times and it definitely sounds very attractive. It seems that OnlyFans and Hopin (https://hopin.com/) were both started as UK LTDs. Downsides (as you mention) are probably access to US investors and potentially issues with VAT because of Brexit. Just out of curiosity - did you experience any issues selling to EU customers because of Brexit? - Source: Hacker News / almost 2 years ago

I was thinking of using the platform https://hopin.com/ which allows for one-on-one "networking" sessions that are limited time (I was thinking 2 or 3 minutes) and if both people choose to connect with each other, they receive each other's contact information after the event. It's a very low pressure way of interacting. Source: about 2 years ago