The Portsmouth Direct line is a railway route between Woking in Surrey and Portsmouth Harbour in Hampshire, England. It forms the principal route for passenger trains between London, Guildford and Portsmouth; connections are made to the ferry services which operate between Portsmouth and the Isle of Wight. The final section of line from Havant to Portsmouth is shared with other passenger routes. The line was opened in stages, in part by the Portsmouth Railway, independently of the established railway companies, the London and South Western Railway (LSWR) and the London, Brighton and South Coast Railway (LBCSR), both of which had rather circuitous routes to Portsmouth. Both of those companies were antagonistic to the direct line, but in 1859 a through train service was operated in the face of obstructive tactics. The LBSCR controlled the route from Havant into Portsmouth, but eventually acquiesced in granting running powers, and making its line on Portsea Island, where the Portsmouth conurbation is situated, joint with the LSWR. The latter company took over the Portsmouth Railway in 1859. The gradients on the line made it difficult to operate in steam days, but it was electrified on the third rail system in 1937. There was heavy traffic connected with the Royal Navy at Portsmouth, and with the holiday traffic to Hayling Island, Southsea and the Isle of Wight. While the former dominance of those traffics has reduced, the extension of London commuting has greatly increased, and the line conducts a busy passenger business. History Early proposals Portsmouth had long been an important centre for the Royal Navy and its support activities, and for ship construction and repair; it was also an important commercial port. In 1803 R A Edlington drew up proposals for a horse-drawn railway between Portsmouth and London; in the same year William Jessop proposed a horse railway from Blackfriars, London to Portsmouth, in part making use of the Surrey Iron Railway. Neither of these proposals was carried forward. Other schemes for a Portsmouth to London railway were put forward over the years, including, in 1844, a planned line to use the atmospheric system of traction. The London and Southampton Railway (L&SR) opened throughout from London (Nine Elms) to Southampton on 11 May 1840. The L&SR and commercial interests in Portsmouth shared an aspiration for a Portsmouth rail connection, and a branch was proposed to run to Portsmouth from Bishopstoke (later renamed Eastleigh) on