ARGWEB does not have an iCal events list
Most calendars have the ability to add an iCalendar link
By adding an iCalendar link, you can keep your personal calendar updated with all events posted by ARGWEB.
The link you need is below. Copy this and paste it into your calendar import function.
https://surrey-arg.org.uk/SARGWEB.php?app=iCal&Org=ARGWEB
OK