After a brief spell in temporary accommodation Hewlett Packard established it's first UK manufacturing facility in these buildings in 1966.
Over the course of the 1970s and 1980s the flat roof building was completed (it was built in 3 sections started from closest to the camera) with the later pitched roof buildings being added in the 1990s.
1999-2000 was pivotal. Hewlett Packard split its operation into two and this site became part of the new Agilent Technologies. It also marked a high point for the site in terms of employment - to house all this activity there were several temporary structures, mostly on the far side of the larger pitched roof building.
Since then economic conditions, re-structuring, and a move to far-eastern manufacturing means that many of these buildings now lie silent and the company has announced it will leave here in 2010.
Time to move on. In 1966 this was a green-field site, since then it has been surrounded by residential zones and will almost certainly be demolished for housing.