1778 – Trollope and Colls established in the London construction market.
1887 – Aktiebolaget Skanska Cementgjuteriet established in Sweden.
1965 – AB Skanska Cementgjuteriet is registered on the Stockholm Stock Exchange A list.
1968 – Trafalgar House acquires Trollope and Colls.
1971-1978 – Skanska Cementgjuteriet carries out its first US projects – subway systems in New York and Washington D.C.
1984 – Skanska Cementgjuteriet changes its name to Skanska.
1996 – Kvaerner buys Trafalgar House.
2000 – Skanska acquires Kvaerner Construction and Skanska UK is born.
2002 – The Skanska Code of Conduct is introduced.
2003 – Iconic London office building The Gherkin is completed
2006 – Skanska buys utilities business McNicholas which becomes part of the UK business.
2010 – Skanska awarded first Crossrail project at Royal Oak Portal. Skanska has worked on seven Crossrail projects to date, including Paddington and Bond Street stations, helping to build the new railway across London.
2011 – Skanska named ‘the greenest company in the UK’ by The Sunday Times.
2012 – Skanska celebrates its 125-year anniversary.
2013 – Skanska acquires Atkins Highways Services, which becomes part of Skanska UK.
2015 – The redevelopment of Skanska’s Bentley Works facilities in Doncaster is completed – the company's first UK Deep Green building with near zero impact on the environment.