By 1930, the MAB was the largest user of civil ambulance services in the world, however the Local Government Act 1929 meant that work of the MAB was taken over by the London County Council, which also took charge of the modern fleet of 107 MAB motor ambulances, together with 46 ambulances which were run by local Poor law unions. Taken with the 21 ambulances already operated by the LCC, this provided a comprehensive service for all kinds of illness and accident, which was under the direction of the Medical Officer of Health for the County of London. The LCC also took control of the River Ambulance Service, but it was disbanded in 1932.