BudgetGuessr rankings

The most expensive megaprojects from the United Kingdom in our catalogue

The 30 most expensive of 101 built and under-construction megaprojects in the United Kingdom in the BudgetGuessr catalogue, ranked by documented cost in US dollars.

Ranking

  1. 1Proposed layout of High Speed 2 terminus at Euston Station and also the terminus for High Speed 1 at St Pancras Station

    High Speed 2

    2026 · Railway$135.23 billionUnder constructionEstimate
  2. 2Coast path diversion adjacent to Sizewell C

    Sizewell C nuclear power station

    2024 · Energy$48.57 billionUnder construction
  3. 3People with banners and balloons protesting against nuclear power at Hinkley Point Nuclear Power Station in Somerset, England

    Hinkley Point C nuclear power station

    2026 · Energy$46.08 billionUnder constructionEstimate
  4. 4Crossrail development

    Crossrail (Elizabeth line project)

    2022 · Railway$23.3 billionEstimate
  5. 5RWE headquarters in Essen, Germany

    Dogger Bank Wind Farm

    2021 · Energy$12.38 billionUnder constructionEstimate
  6. 6Southeastern High Speed Class 395 Javelin No. 395018 at London St Pancras International

    High Speed 1

    2012 · Railway$12.33 billion
  7. 7West Facing View of Waterloo East Railway Station in the London Borough of Lambeth.

    East West Rail Link

    2023 · Railway$8.2 billionUnder constructionEstimate
  8. 8London Heathrow, Terminal 5, London, England

    Heathrow Airport Terminal 5

    2008 · Airport$7.9 billion
  9. 9The entrance of the departure hall of London Heathrow Terminal 2 – The Queen's Terminal, London, England, UK.

    Heathrow Terminal 2 redevelopment

    2014 · Airport$3.91 billion
  10. 10London Array wind farm as viewed from the air in February 2019 London_Array

    London Array

    2013 · Energy$2.81 billion
  11. 11The Duddon Sands West Offshore Wind Farm. I suppose these wind dynamos are going to be part of the normal seascape from now on. Uploader's note: Photo was apparently taken from the seafront at Blackpool.

    West of Duddon Sands Offshore Wind Farm

    2014 · Energy$2.64 billion
  12. 12London Gateway Container Terminal at Sunset

    London Gateway initial port development

    2013 · Port$2.47 billionEstimate
  13. 13Eyemouth Harbour: NRG Offshore Wind

    Neart na Gaoithe Offshore Wind Farm

    2019 · Energy$2.21 billionEstimate
  14. 14A14 junction

    A14 Cambridge–Huntingdon improvement scheme

    2022 · Road or highway$1.85 billion
  15. 15This is a photo of the Rampion offshore wind farm, off the coast of East Sussex on a calm day, taken from a plane

    Rampion Offshore Wind Farm

    2018 · Energy$1.76 billion
  16. 16Queensferry Crossing by night.

    Queensferry Crossing

    2017 · Bridge$1.72 billion
  17. 17Lockwood Beck site; the site for one of the shafts on the Woodsmith Mine Tunnel

    Woodsmith Mine Tunnel

    2018 · Tunnel$1.71 billionUnder constructionEstimate
  18. 18Wembley Stadium, London, England, United Kingdom

    Wembley Stadium

    2007 · Stadium$1.6 billion
  19. 19View looking east at M62_motorway J22 towards Scammonden Bridge.

    M62 motorway

    2007 · Road or highway$1.53 billion
  20. 20A control room for the M25 J5-7 Smart Motorways scheme, 2014.

    M25 motorway

    1986 · Road or highway$1.33 billion
  21. 21Tottenham Hotspur Stadium, London, England, United Kingdom

    Tottenham Hotspur Stadium

    2019 · Stadium$1.28 billion
  22. 22Staythorpe Power Station - 1

    Staythorpe Power Station

    2010 · Energy$1.19 billion
  23. 231 Canada Square taken from Cabot Square

    One Canada Square

    1991 · Skyscraper$1.1 billion
  24. 24Everton Stadium in use at the 2025 Rugby League Ashes, 01.11.25.

    Hill Dickinson Stadium

    2025 · Stadium$1.07 billion
  25. 25One of the Edinburgh Trams heading west along Princes Street, on the day the line was opened to the public. It's approaching the Hanover Street/Mound junction, beyond which is the Princes Street stop. Heading the other way are some Lothian Buses.

    Edinburgh Trams

    2023 · Railway$1.04 billion
  26. 26Emirates Stadium, London, England, United Kingdom

    Emirates Stadium

    2006 · Stadium$791.19 million
  27. 27Spaldingo elektrinė

    Spalding Power Station

    2004 · Energy$778.13 million
  28. 28Walkie-Talkie, 20 Fenchurch Street London, England

    20 Fenchurch Street

    2014 · Skyscraper$772.58 millionEstimate
  29. 29Driving north on Mersey Gateway

    Mersey Gateway Bridge

    2017 · Bridge$772.22 million
  30. 30HSBC Building, 8 Canada Square, Canary Wharf, London, UK

    8 Canada Square

    2002 · Skyscraper$749.73 million

How this ranking works

This is a curated catalogue, not an exhaustive list of every megaproject. Projects are ordered by their recorded US-dollar equivalent; each detail page shows the source amount and any currency conversion. Figures are not adjusted for inflation, and construction bills, estimates, and programme costs can have different scopes. Unbuilt proposals and cancelled projects are excluded.

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