Wales also principally draws on the clinical guidelines developed by the National Institute for Health and Care Excellence (NICE), with some established collaboration around pharmaceuticals and medical devices (see Chapter 1 on England). In 2014-15 a grant of GBP 15.1 billion was made to the Welsh Government, of which GBP 6.4 billion was allocated to Health and Social Services, representing 42% of the expenditure of the devolved responsibilities of the Welsh Government (Welsh Government, 2014a). The block grant from the UK Government to Wales is made based on the population allocations covered by the Barnett formula (which is also used to calculate grants to the other devolved nations).