We assumed 20 days' holiday and eight bank holidays each year.
We assumed management costs of 20% of the direct cost paid to the team members providing the service.
We assumed a cost of £0.60 for each letter, which includes postage, envelope and printing.
We assumed a cost of £0.30 for faxing back a letter, which includes print and phone costs.
We assume that your team has to deal with calls chasing them for their responses and have added 20% to the time it takes to complete a request for information to cover this.
