The ILP had begun organising volunteers in November 1936 following the return to Britain of Bob Edwards from delivering an ambulance sent by the ILP for the POUM militia. Though there had been five times the number of volunteers, the ILP would only accept unmarried men for its contingent and 25 men left Britain on 8 January as the vanguard of a larger force to be sent later. However, the day after the contingent left, the British government announced that it would prosecute anyone going to fight in Spain and the ILP did not try to recruit any more volunteers.