Calmac Ferries contract subsidies: FOI release

In respect to the CHFS PSO can you provide the following information under FOI legislation:

1. The detailed explanation and the associated financial impact thereof which therefore illustrates the increase in subsidy level from £868m to £975m.
2. The breakdown of the £975m subsidy payments by contract year, split between fuel payments and non-fuel subsidy payments.
3. The actual subsidy payments for contract year 1, split between fuel payments and non-fuel subsidy payments.
4. A detailed breakdown and explanation of any difference between the contract figure (Question2) and actual subsidy payment (question3).