Jury service is a public duty.
Unless someone is disqualified, has the right to be excused or has a valid reason for discretionary excusal then they must serve.
All Jurors are selected at random by computer from the electoral register. Everyone on the electoral register from the ages of 18 to 69 may be selected even if they are not eligible to serve on a Jury. Some people never get called, others get called more than once.
Courts can pay for loss of earnings, travel costs and a subsistence rate during jury service.
An employee can make a complaint to an employment tribunal if they are dismissed or suffer detriment for taking time off for jury service.