Selective Employment Tax
Selective Employment Tax (SET) was a payroll tax in the United Kingdom. It was levied against employers at a flat rate of 25 s per man, and 12 s 6 d for women.
SET was intended to subside manufacturing industry from the proceeds of the services industries, to help exports. At the end of each accounting period, manufacturing companies would have their SET payments refunded, along with a 7s 6d bounty per employee.