Suggest a gap

Spotted something missing that this map should carry? Name it. The bar: concrete and fillable (a fund, register, institution, dataset or legal instrument that does not exist), not a complaint about one that merely works badly. Local gaps are especially wanted: everything on the map so far is national, and the constituency-level layer starts with suggestions like yours. Curators verify every suggestion against primary sources before it appears; if it fits no existing domain it starts on the Other shelf.