In 1925 the "inner circle" service was ten trains an hour in each direction, but this frequency of service was causing problems and a reduction to eight trains an hour would leave the Kensington High Street to Edgware Road section with too few trains.
In 1925 the "inner circle" service was ten trains per hour in each direction, but this frequency of service caused problems. A reduction to eight would leave the Kensington High Street to Edgware Road section with too few trains.