The Official Journal of the European Union (OJEU) notice lists a broad range of government departments and agencies which are allowed to use the GPSoC framework agreements. This list is reproduced below.
This list of permitted organisations applies across Lot 1, Lot 2 and Lot 3. Current contracting arrangements mean that only Lot 2 and Lot 3 are available to the permitted organisations listed.
The Lot 1 framework might be adapted in the future to enable Lot 1 services paid for locally to be called-off by these permitted organisations. This is not available at the moment.