BBC – Labour leaders and Labour prime ministers have since time immemorial (well almost) taken millions of pounds of funding on behalf of their party from trade unions, and devoted a considerable slug of their waking hours to telling the world that these trade unions are not bossing Labour policies.
Tony Blair, as prime minister, made it something of a personal speciality to take trade union money with one hand and to sock trade union leaders in the moosh with his other. But that never stopped the Tory Party accusing him and his successors of being in hock to the brothers.