It's coming from inside the House (of Commons): Agenda control,accountability, and interest group lobbying in majoritarian parliaments

In majoritarian parliaments, the executive branch typically enjoys an informational advantage over the legislature. In theory, legislators can reduce this asymmetry with information from interest groups. In practice, the government is almost always better informed than the legislature. This article develops a model whereby a politician's access to outside information depends not just on her parliamentary power but on the diffusion of legislative agenda control among political parties—for example, during minority government. Using a new panel data set of 41,619 lobbying communications, it finds interest groups are more likely to communicate with government frontbenchers than with opposition or backbench members. This gap diminishes as agenda control diffuses to opposition parties. It also finds evidence of partisan clustering in lobbying networks during majority government. Strong legislative parties weaken accountability by restricting access to outside information, but this is conditional on the governing party's control over the agenda.