Cookies

What are cookies?

Cookies are information packets sent by web servers to web browsers, and stored by the web browsers. The information is then sent back to the server each time the browser requests a page from the server. This enables a web server to identify and track web browsers. There are two main kinds of cookies: session cookies and persistent cookies. Session cookies are deleted from your computer when you close your browser, whereas persistent cookies remain stored on your computer until deleted, or until they reach their expiry date.

Two types of cookies

Cookies can be classified as either ‘essential’ or ‘non-essential’.

Essential cookies: these are cookies that are either:

  • used solely to carry out or facilitate the transmission of communications over a network; or
  • strictly necessary to provide an online service (e.g. our website or a service on our website) which you have requested.

Non-essential cookies: these are any cookies that do not fall within the definition of essential cookies, such as cookies used to analyse your behaviour on a website (‘analytical’ cookies) or cookies used to display advertisements to you (‘advertising’ cookies).

Session and persistent cookies

Cookies can be classified as either ‘session’ or ‘persistent’, depending on how long they last after they are placed on your browser.

Session cookies: session cookies last for as long as you keep your browser open. They expire when you close your browser.

Persistent cookies: persistent cookies expire at a fixed point in time or if you manually delete them from your browser, whichever occurs first.

First and third party cookies

Cookies can be classified as ‘first party’ or ‘third party’.

First party cookies: these are cookies placed on your device by our website domain.

Third party cookies: these are cookies placed on your device by third party website domains.

How to refuse cookies

Most browsers allow you to refuse to accept cookies.


In Internet Explorer, you can refuse all cookies by clicking “Tools”, “Internet Options”, “Privacy”, and selecting “Block all cookies” using the sliding selector.

In Firefox, you can adjust your cookies settings by clicking “Tools”, “Options” and “Privacy”.

Blocking cookies will have a negative impact upon the usability of some websites.

Cookies used on our website

NameTypeFirst or third partySession or persistentUsage
@@History/@@scroll|# Non-essential Third persistent Unclassified
@@History/@@scroll|# Non-essential Third Session Unclassified
__utm.gif Non-essential Third Session Google analytics tracking code that logs details about the visitors browser and computer
__utma Non-essential Third session Collects data on the number of times a user has visited the website as well ad dates for the first and most recent visit. Used by google analytics
__utmb Non-essential Third session Registers a timestamp with the exact time when the user accessed the website. Used by google analytics to calculate the duration of a website visit.
__utmc Non-essential Third session Registers a timestamp with the exact time when the user accessed the website. Used by google analytics to calculate the duration of a website visit.
__utmt Non-essential Third session Used to throttle the speed of requests to the server
__utmz Non-essential Third 6 months Collects data on where the user came from, what search engine was used, what link was clicked and what search term was used. Used by Google analytics
bcookie Non-essential Third 2 years Used by the social networking service, Linkedin, for tracking the use of embedded services
bscookie Non-essential Third 2 years Used by the social networking service, Linkedin, for tracking the use of embedded services
GPS Non-essential Third session Registers a unique ID on mobile devices to enable tracking based on geographical GPS location
lidc Non-essential Third session Used by the social networking service, Linkedin, for tracking the use of embedded services
NID Non-essential Third 6 months Registers a unique ID that identifies a returning user's device. The ID is used for targeted ads
PREF Non-essential Third 8 months Registers a unique ID that is used by Google to keep statistics of how the visitor uses YouTube videos across different websites
UUID#[abcdef0123456789]{32} essential First session Unclassified
VISITOR_INFO1_LIVE Non-essential Third 179 days Tries to estimate the users' bandwidth on pages with integrated YouTube videos
YSC Non-essential Third session Registers a unique ID to keep statistics of what videos from YouTube the user has seen

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