Listen to Judith Readyhough - Salary Sacrifice – What Benefits Does It Give

Salary sacrifice is one of the best ways for employees to save and get things they need in their life. It allows them to get part of their remuneration in forms others than cash.
Essentially, salary sacrifice refers to agreements entered by employers and employees whereby the latter agree to take part of their wages in the form of employee benefits equal in value to the amount exchanged.
http://teamrewards.co.uk/employee-benefits.html