Brown has also accused Johnson of undermining devolution with the Internal Market Act which will now allows Whitehall spending in Scotland bypass the Holyrood government.Brown said: “If he continues in this manner, Boris Johnson risks becoming the biggest recruiting sergeant for nationalism and will lose any hope of persuading Scotland’s undecided voters to stay with the UK.”He also said the UK nations had failed to work together through joint ministerial committees.Brown added: “Co-operation