Hello Rebecca, when I worked at Pennine Acute Hospitals NHS Trust, we had a scheme. Contact the corporate HR dept they should be able to help you with your enquiry.

I've introduced this in a few places. Guidelines are simple:

1. Holiday can only be bought or sold from the *following* holiday year, not from the current one.
2. Holiday can only be sold down to the statutory minimum.
3. There's no practical limit to how much can be bought, but I tend to limit it to five days, pro rata.

The advantages (for the employee) to buying extra holiday are twofold: (1) the cost is spread over the working year rather than falling in a single month, as would be the case with unpaid absence; and (2) the price is fixed at the point of purchase so, if the employee gets a pay rise or promotion during the period, the cost of the extra holiday doesn't change.