Paddington, also known as London Paddington, is a London railway station and London Underground station complex, located on Praed Street in the Paddington area. The site has been the London terminus of services provided by the Great Western Railway and its successors since 1838. Much of the main line station dates from 1854 and was designed by Isambard Kingdom Brunel. As of the 2022–23 Office of Rail & Road Statistics, it is the second busiest station in the United Kingdom, after London Liverpool Street, with 59.2 million entries and exits.
Heathrow Express is a high-frequency airport rail link operating between London Heathrow Airport and London Paddington. Opened in 1998, trains run non-stop, with a journey time of 15 minutes. The service is operated jointly by Great Western Railway and Heathrow Express Operating Company, a wholly owned subsidiary of Heathrow Airport Holdings. Around 16,000 passengers use the service each day.
West Ealing railway station is on the Great Western Main Line in Ealing, situated in west London. It is 6 miles 46 chains (10.6 km) down the line from London Paddington and is situated between Ealing Broadway to the east and Hanwell to the west. Its three-letter station code is WEA.
Heathrow Terminals 2 & 3 is a London Underground station at Heathrow Airport on the Heathrow branch of the Piccadilly line, which serves Heathrow Terminal 2 and Terminal 3. The station also served Heathrow Terminal 1 until its closure in January 2016. The station is situated in Travelcard Zone 6, along with the nearby Heathrow Terminals 2 & 3 railway station served by Heathrow Express and Elizabeth line services.
Heathrow Terminal 4 is a London Underground station at Heathrow Airport on the Heathrow branch of the Piccadilly line. The station is situated in Travelcard Zone 6.
In the railway system of Great Britain, a train operating company (TOC) is a railway undertaking operating passenger trains under the collective National Rail brand. TOCs have existed since the privatisation of the network under the Railways Act 1993.
The British Rail Class 360 is an electric multiple unit class that was built by Siemens Mobility on its Desiro platform between 2002 and 2005 for First Great Eastern and Heathrow Connect. The remaining members of the class are operated by East Midlands Railway.
Heathrow Terminal 5 is a shared railway and London Underground station serving Heathrow Terminal 5. It serves as a terminus for Heathrow Express services to Paddington, and for Elizabeth line and London Underground Piccadilly line services to central London. It is managed and staffed by Heathrow Express.
Reading railway station is a major transport hub in the town of Reading in Berkshire, England, it is 36 miles (58 km) west of London Paddington. It is sited on the northern edge of the town centre, near to the main retail and commercial areas and the River Thames. It is the busiest station in Berkshire, and the third busiest in South East England.
Langley railway station is in Langley, a suburb of Slough, Berkshire, England. It is 16 miles 18 chains (26.1 km) down the line from London Paddington and is situated between Iver to the east and Slough to the west. The station is served by local services operated by the Elizabeth line.
Hayes & Harlington is a railway station serving the west London districts Hayes and Harlington in the London Borough of Hillingdon. It is 10 miles 71 chains down the line from London Paddington and is situated between Southall and West Drayton.
Hanwell railway station serves the town of Hanwell in the London Borough of Ealing. It is 7 miles 28 chains (11.8 km) down the line from London Paddington and is situated between West Ealing and Southall.
Heathrow Connect was a train service in London provided jointly by Heathrow Express and Great Western Railway (GWR), between Paddington station and Heathrow Airport. The service followed the same route as the non-stop Heathrow Express service but called at certain intermediate stations, connecting several locations in West London with each other, the airport, and Central London. It ran every half-hour throughout the day and evening. The service was launched on 12 June 2005 and ceased on 19 May 2018, when it was absorbed into the TfL Rail concession, in advance of becoming part of the Elizabeth line once it opened on 24 May 2022.
Heathrow Terminals 2 & 3 railway station serves Terminal 2 and Terminal 3 at London Heathrow Airport.
Heathrow Terminal 5 is an airport terminal at Heathrow Airport, the main airport serving London. Opened in 2008, the main building in the complex is the largest free-standing structure in the United Kingdom. Until 2012, the terminal was used solely by British Airways. It now is used as one of the three global hubs of IAG, served by British Airways and Iberia.
Heathrow Terminal 3 is an airport terminal at Heathrow Airport, serving London, the capital city of the United Kingdom. Terminal 3 is currently used as one of the main global hubs of the International Airlines Group members British Airways and Iberia since 12 July 2022. It is also used by the majority of members of the Oneworld and a few SkyTeam alliances along with several long-haul non-affiliated airlines. It is also the base for Virgin Atlantic.
The Western Rail Approach to Heathrow is a proposed bi-directional link westward from London's Heathrow Airport to the Great Western Main Line. It would thus run, in council areas, from Greater London under Iver, South Bucks, Buckinghamshire to Langley, Slough. Beginning at Heathrow Terminal 5 station, it would run via a tunnel to a junction east of Langley station, therefore allowing trains to run to and from destinations in the west: Slough, Reading and beyond. When completed, it would improve rail connections to Heathrow from the Thames Valley as well as from South West England, South Wales and The Midlands. It would also reduce congestion at London Paddington station by removing the need, which presently exists, for passengers from Heathrow who are bound for those regions, to travel to Hayes and Harlington and then change at Reading or to make their interchange at Paddington, central London. Paddington would remain an interchange for services to/from Euston, Saint Pancras and London generally and a little of the Great Western Main Line would gain rail capacity as many services would take the resultant side loop via Heathrow.
TfL Rail was the concession which operated commuter services on two separate railway lines in London, England and its environs whilst the Crossrail construction project linking these lines was underway. It ran from 2015 until May 2022, upon the opening of the Crossrail central section, when TfL Rail was rebranded as Elizabeth line and the name was discontinued.
The Elizabeth line is a high-frequency hybrid urban–suburban rail service in London and its suburbs. It runs services on dedicated infrastructure in central London from the Great Western Main Line west of Paddington station to Abbey Wood and via Whitechapel to the Great Eastern Main Line near Stratford; along the Great Western Main Line to Reading and Heathrow Airport in the west; and along the Great Eastern Main Line to Shenfield in the east. The service is named after Queen Elizabeth II, who officially opened the line on 17 May 2022 during her Platinum Jubilee year; passenger services started on 24 May 2022. Elizabeth line services are operated by MTR Elizabeth line under a concession from Transport for London (TfL). Despite being named under the same system as London Underground lines, and having sections which are underground, the Elizabeth line is not classified as a London Underground line.
Over the years, a number of transport proposals have been made to improve public access to Heathrow Airport, near London in the United Kingdom.
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London transportportal 
