A wide range of factors was taken into account in deciding the particular locations for decentralising Departments and agencies, including: the need to achieve accordance with the national spatial strategy, in terms of the gateways, hubs and their respective catchment areas; the location of existing decentralised offices; the desirability of clustering a Department's decentralised units within a region; the importance of respecting the scale and character of locations in terms of their capacity to absorb the number of new jobs involved; the existence of good transport links by road, rail and-or air and the general infrastructural capacity in the areas selected.