By ‘other minor countries in the UK’, I assume you mean, 3 of the 4 countries in the UK.
Whether we like it or not, the UK is heading towards becoming a federalised union of four nations. In particular many in the devolved nations feel the UK government has had an ‘England first’ stance for too long, which has pushed us in the direction of ever-greater devolution. The position of UK prime minister, and the UK government, doesn’t have the clout it once did.