We are frequently invited to online open events at universities, and a full list of all the current local university events is available on the careers page on the college website.
If you would like to have a virtual tour of any university, UCAS have pulled together a complete directory of universities and facilities with each ones tour linked.
They are definitely worth taking a look.
https://www.ucas.com/undergraduate/what-and-where-study/open-days-andevents/virtual-tours