Annual Leave Purchase is simply a way of buying more annual leave.
Imagine being able to take extra time off work for long weekends away, more time off with the children or even a much dreamed of long haul trip that your current allowance wouldn't enable you to take.
You will need to plan ahead when making your choice as once you buy the additional leave you can't sell them back even if you have a lifestyle change your choices will apply till the start of the following holiday year.
Normal departmental holiday booking procedures will apply but your Line Manager will do their best to accommodate your request.