The current budget allocation within the Spending Review period to cover scheme preparation costs is around £18.95 million and depending on the phasing of the construction this preparation budget will have to rise significantly to somewhere in the region of £25 million per annum in subsequent Spending Reviews to meet the 2025 completion timetable. 3. To assist future funding programming, two possible expenditure profiles have been modelled - phased construction with the first site start commencing in 2017, and a single contract approach (eg a single NPD contract) with a site start in 2021.