|Type||Manor house/Science park|
|Designations||Grade II* listed|
The surrounding site has been occupied since prehistoric times. The current house was started in 1715 by Mark Antonie, a self-made man who aspired to become part of the landed gentry. It passed down to John Antonie, who bequeathed it on his death to a cousin, the MP William Lee, who then adopted the additional surname of Antonie. On his own death in 1815 William Lee Antonie left it to his nephew, the astronomer and antiquarian John Fiott, who thereupon adopted the surname of Lee.
The house and extensive grounds were acquired in 1935 by Henry Mond, 2nd Baron Melchett and subsequently sold to Unilever in November 1947, who restored and developed them into a research laboratory through 1948, with the first staff moving in during 1950. Unilever employed up to 1,750 people at Colworth during the 1970s and constructed several laboratory buildings surrounding a central grassed park.
In 2004 Unilever entered into a joint venture with property investment company Arlington Securities to manage Colworth Science Park, with the aim of turning it into a science cluster by attracting science businesses, academic outposts, and science-based entrepreneurs. Arlington was subsequently acquired by Goodman, a property group involved in long-term ownership, development, and management of commercial and industrial property. In 2015, the joint venture vehicle was acquired by Palmer Capital and Wrenbridge Land. Colworth Science Park remains one of Unilever's six research centres located around the world with around 750 Unilever employees. An additional 200 personnel are employed by several small companies located on the site.
The Colworth House grounds was the location of a Channel 4 Time Team programme, first broadcast on February 22, 2009. Numerous finds by amateur archaeologists led to the discovery of a Roman villa and farm in a field adjacent to the property.
Colworth House has also given its name to the Colworth Medal, established by the late Professor Tony James of Unilever Research and Professor Henry Arnstein of the Biochemical Society in 1963. The award recognises outstanding research by a young biochemist of any nationality who has carried out the majority of their work in the UK.
- Historic England. "COLWORTH HOUSE List entry Number: 1160878 (1160878)". National Heritage List for England. Retrieved 25 April 2015.
- "Parishes: Sharnbrook". British History Online. Retrieved 17 February 2017.
- Unilever website, "Colworth UK" Online reference
- "Roman villa unearthed in Sharnbrook". Luton Today. Luton, United Kingdom: Johnston Publishing Ltd. 14 January 2009. Archived from the original on 6 August 2014. Retrieved 6 August 2014.
- Michael Jones (1997). Colworth in Context: A History of Colworth Estate, Bedfordshire from 1720 to 1947. Newnorth Print Limited.