Kensington and the City and a combined proposal under the name Metropolitan District Railway was agreed on the same day. Initially, the District and the Met were closely associated and it was intended that they would soon merge. The Met's chairman and three other directors were on the board of the District, John Fowler was the engineer of both companies and the construction works for all of the extensions were let as a single contract. The District was established as a separate company to enable funds to be raised independently of the Met. Unlike the Metropolitan, the route did not follow an easy alignment under existing roads and land values were higher, so compensation payments for property were much higher. Major landowners, including Lord Kensington, sold parcels of land to the railway company. To ensure ventilation, the line west of Gloucester Road was carried in open cuttings, the rest mainly in a cut and cover tunnel wide and deep; at the stations the platform ends were left open. Construction costs and compensation payments were so high that the cost of the first section of the District from South Kensington to Westminster was £3 million, almost three times the cost of the Met's original, longer line. On 24 December 1868, the District opened its line from South Kensington to Westminster, with stations at South Kensington, Sloane Square, Victoria, St James's Park and Westminster Bridge (now Westminster), the Met extending eastwards from Brompton to a shared station at South Kensington on the same day. The District also had parliamentary permission to extend westward from Brompton (Gloucester Road) station and, on 12 April 1869, it opened a single track line from there to West Brompton on the West London Railway. There were no intermediate stations and this service initially operated as a shuttle. By summer 1869 additional tracks had been laid between South Kensington and Brompton (Gloucester Road) and from Kensington (High Street) to a junction with the line to West Brompton. During the night of 5 July 1870 the District secretly built the disputed Cromwell curve connecting Brompton (Gloucester Road) and Kensington (High Street). East of Westminster, the next section ran in the newly constructed Victoria Embankment built by the Metropolitan Board of Works along the north bank of the River Thames. The line was opened from Westminster to Blackfriars on 30 May 1870 with stations at Charing Cross (now Embankment), The