RMT 'breached' Labour party rulesBob Crow has demanded the right to appeal the decision
One of the unions that helped found Labour has been warned it may have to leave the party because of a row over the rules.
Rail union the RMT has threatened legal action, after the Labour party decided it had breached the rules by allowing affiliation to other parties.
BBC NewsLabour threatens to cut ties with founding union The GuardianUnion issues legal threat to Labour The Scotsman