Please feel free to use the link below to export the calendar.
iCal (for adding to Google, Outlook etc): https://www.google.com/calendar/ical/1q6bt6kp6mnvnv44a677t5g8vg%40group.calendar.google.com/public/basic.ics
HTML (for opening the calendar in your browser, not embedding): https://www.google.com/calendar/embed?src=1q6bt6kp6mnvnv44a677t5g8vg%40group.calendar.google.com&ctz=Europe/London