Skip to the content


What is a cookie?

Most websites you visit will use cookies in order to improve your user experience by enabling that website to ‘remember’ you, either for the duration of your visit (using a ‘session cookie’) or for repeat visits (using a ‘persistent cookie’).
Cookies do lots of different jobs, like letting you navigate between pages efficiently, storing your preferences, and generally improving your experience of a website. Cookies make the interaction between you and the website faster and easier. If a website doesn’t use cookies, it will think you are a new visitor every time you move to a new page on the site – for example, when you enter your login details and move to another page it won’t recognise you and it won’t be able to keep you logged in.
Some websites will also use cookies to enable them to target their advertising or marketing messages based for example, on your location and/or browsing habits.
Cookies may be set by the website you are visiting (‘first party cookies’) or they may be set by other websites who run content on the page you are viewing (‘third party cookies’).

What is in a cookie?

A cookie is a simple text file that is stored on your computer or mobile device by a website’s server and only that server will be able to retrieve or read the contents of that cookie. Each cookie is unique to your web browser. It will contain some anonymous information such as a unique identifier and the site name and some digits and numbers. It allows a website to remember things like your preferences or what’s in your shopping basket.

What to do if you don’t want cookies to be set

Some people find the idea of a website storing information on their computer or mobile device a bit intrusive, particularly when this information is stored and used by a third party without them knowing. Although this is generally quite harmless you may not, for example, want to see advertising that has been targeted to your interests. If you prefer, it is possible to block some or all cookies, or even to delete cookies that have already been set; but you need to be aware that you might lose some functions of that website.

Web browser cookies:

If you don’t want to receive cookies, you can modify your browser so that it notifies you when cookies are sent to it or you can refuse cookies altogether. You can also delete cookies that have already been set.
If you wish to restrict or block web browser cookies which are set on your device then you can do this through your browser settings; the Help function within your browser should tell you how. Alternatively, you may wish to visit, which contains comprehensive information on how to do this on a wide variety of desktop browsers. 

The list below details the cookies used by It explains why we use each cookie, whether the cookies contain any of your personal information (they don’t!) and what will happen if you choose not to allow us to use each cookie.


Cookie: Nemisys



These are ‘session cookies’, so called because they are deleted at the end of your browser session, in other words when you close your internet browser. Our session cookies do not contain any of your personal information.

We use “session cookies” for the following reasons:

  • Our web site actually lives on several computers, not just 1. This means we can cope with lots of visitors, and also means if 1 of our computers dies the web site is still available.
  • We use session cookies to make sure that for any single visit to our web site you stay on the same computer. This helps us fix any bugs that crop up (because sometimes they happen on just 1 computer, not all of them at once).
  • It also means that we can split web forms over 2 or more pages and still keep track of your progress through the form. Don’t worry – we don’t put any personal information from the form in to the cookie itself.

Disabling these cookies may mean our web site does not work for you.

More Details:


Cookie: GoogleAnalytics

Cookie Name: _utma, _utmb, _utmc, _utmv, _utmz


We use Google Analytics to understand how we can improve our web site. These cookies do not contain any personal information.

The reports generated by Google Analytics contain aggregated, anonymous information. For example, it will tell us how many people visited our site, but not who visited our site.

It is expressly against Google’s Terms of Service even to try to capture personal information.

Google Analytics cookies do not expire – they will last until you delete your cookies.

Disabling these cookies means we will think there are fewer people using our web site than there really are.

More Details:


Cookie: Google Custom Search, Google Recaptcha, Google Maps

Cookie Name: Pref, Nid, Sid, HSID, APISID, S


These cookies are used by Google to store user preferences when viewing pages on our website, which contain the embedded named Google functionality.

Disabling these cookies may mean our web site does not work for you.

More Details:


Cookie: YouTube cookies

Name: Recently_watched_video_id_list, Activity, Visitor_Info1_Live, Pref


Some of our pages contain videos embedded from YouTube. Depending on whether you play these videos, and whether you already have a YouTube or Google (which owns YouTube) account, YouTube will use cookies. 

We do not have access to these cookies, which are used by YouTube for purposes such as delivering a personalised browsing experience (through suggesting videos and targeting advertising).
For example, if you are signed in to your Google or YouTube Account while you view one of our videos, this video may appear in the “viewing history” on your YouTube Account.

YouTube does not store any personal information within its cookies.

Disabling this cookie should not have a significant impact on your use of our site. Google now has a single privacy policy covering most of its services, partly for the EU Cookie Law.

More Details:


Cookie: AddThis

Name: Bt, Uvc, Psc, Uid, Dt, Di, Loc, Uit, User_segment, _Atuvc

AddThis is used on our website as a content sharing platform. Cookies generated by AddThis have various expiry dates from 24 hours to 2 years.

Disabling these cookies means the functionality provided by AddThis may not work for you.

More Details:


Cookie: SlideShare

Name: SERVERID, _Gads
We use Slideshare to share presentation slides with you.
Depending on whether you play the presentation, Slideshow may use cookies.
Disabling these cookies may mean you will be unable to view the presentation we have embedded into our website.
More Details:


Cookie: Twitter

Name: K, Original_referer, _Twitter_sess, Guest_id
We have embedded our recent Twitter feeds into our website. This makes it easier for you to view our most recent tweets sourced from Twitter.
Twitter may generate their own cookies to collect information.
Disabling these cookies may mean our website does not work for you.
More Details:


Cookie: TweetMeme

Name: User_unique_ident, Post_auth_user_settings, Tm_identity, U
We use TweetMeme to provide you with the option to ‘tweet’ on certain items displayed on our website.
These cookies are generated and used by TweetMeme; we do not have access to these cookies.
Disabling these cookies should not have a significant impact on your use of our site.
More Details: