How we use cookies on

A cookie is a small file made up of letters and numbers that is placed on your computer when you visit a website.

Arup uses cookies on this website ( to distinguish between different visitors, improve navigation for visitors and learn how the website is used so we can run reports and identify ways to make improvements.

We do not use cookies to collect personally identifiable information.

If we do want to collect personally identifiable information through one of our websites, we will always state this clearly and explain what we intend to do with the information, so you may choose whether or not to proceed.

Managing and removing cookies

Most web browsers allow you to manage the acceptance or blocking of cookies by using their settings. (If you are unsure which web browser you are using can tell you the name and version).

The website provides detailed information about website cookies and how to manage and remove them using your browser.

You can also consult your web browser’s help files, which can usually be accessed by hitting F1 on your keyboard while you are using the web browser.

What happens if I disable cookies?

We have taken care to ensure that you can browse this website with cookies disabled.

However, disabling or blocking cookies from may result in some degradation of website performance, and in exceptional cases some features may not work at all.

The cookies we are using

Here is a list of the cookies that we use on and a description of their intended purpose:

Hide cookies notification

This cookie is used to show a banner explaining our cookie policy. If you click 'close' on the message, this cookie is set to ‘True' so that the banner does not display again on that visit or on subsequent visits.

  • iCookies_useCookies
    Typical content: plain text string (set to true)
    Expires: 38 years

Google Analytics

We use Google Analytics to assess which pages are the most popular and identify trends in usage to inform future development and improvements. Google Analytics uses anonymous cookies to log the IP addresses of visitors and generate reports. No personal information is collected in the process. You can opt out of having your visit anonymously tracked by Google by registering with Google's opt-out programme.

Google Analytics generates the following cookies:

  • _utma
    Typical content: randomly generated number
    Expires: 2 years
  • _utmb
    Typical content: randomly generated number
    Expires: 30 minutes
  • _utmc
    Typical content: randomly generated number
    Expires: when user exits browser
  • _utmz
    Typical content: randomly generated number, plus information on how the site was reached (for example, directly or via a link, organic search)
    Expires: 6 months


To help make navigating our website faster, uses a ‘session ID’ cookie to track when you enter and exit the website and remember which pages you have visited. This cookie is only used for the duration of your visit. We do not store it. When you close your web browser, the cookie expires.

  • ASP.NET_SessionId ( 
    Typical content: randomly generated session ID
    Expires: on browser close 
  • ASP.NET_SessionId ( 
    Typical content: randomly generated session ID
    Expires: on browser close

Questions or concerns

If you have any questions or concerns about the cookies used by, we’d be happy to answer them. Email Arup’s web team on