Skip navigation

Cookie policy

Last updated 29 December 2018

What are Cookies?

Cookies are small text files (letters and numbers) that OPM stores on your browser or the hard drive of your computer, if you agree. Cookies contain information that is transferred to your computer’s hard drive. They are widely used in order to make websites work, or work more efficiently, as well as to provide information to us about the people who use our sites.

How do we use them?

Our websites use cookies to distinguish you from other users of our website and to provide you with a good experience when you browse our websites.

We do not use a plugin to generate social sharing icons and do not store any cookies or visitor information from this.

What types of Cookies do we use?

We use the following cookies:

  • Analytical / performance cookies: They allow us to collect information in an anonymous form about how visitors use our sites including by recognising and counting the number of visitors to our site and seeing how visitors move around it. This helps us to improve the way our website works, for example, by ensuring that visitors easily find what they are looking for. We use Google Analytics to do this: please see below for privacy details of Google Analytics.
  • Functionality cookies: These are used to enhance visitor experience and recognise you when you return to our website. They include some third-party cookies used to enable visitors to share content from our sites, via social networks. If you disable these cookies, the social sharing feature will not be available to you.

The table below shows the cookies we use and their function:

Cookie Name Purpose
_ga Google Analytics Used to distinguish visitors. Expires after two years.
_gid Google Analytics Used to distinguish visitors. Expires after one year.
_gat_UA-61837135-3 Google Analytics Used to enable us to gather meaningful analytics. Expires after one minute.
Vimeo Used by video embeds. Please refer to Vimeo’s privacy policy at
YouTube Used by video embeds. Please refer to Google’s privacy policy at
SoundCloud Used by audio embeds. Please refer to SoundCloud’s cookie policy at

You will need to either accept or decline the cookies we use. To enrich our content, we may embed video content from websites such as YouTube, and audio content from sites such as Soundcloud. As a result, when you view content embedded from these sites, they may set a cookie.

OPM websites carry embedded 'share' buttons to enable users of the site to easily share articles with their friends through a number of popular social networks, for example, Facebook, Twitter, or LinkedIn. These sites may set a cookie when you are also logged in to their service.

OPM does not control the dissemination of these cookies and you should check the relevant third-party website for more information about these.

How do I change my cookie settings?

You can block cookies by activating the setting on your browser that allows you to refuse the setting of all or some cookies. Most web browsers allow some control of most cookies through the browser settings. The Help function within your browser should tell you how to do this. Alternatively, you may wish to visit which contains comprehensive information on how to do this on a wide variety of browsers. You will also find details on how to delete cookies from your computer as well as more general information about cookies. For information on how to do this on the browser of your mobile phone you will need to refer to your handset manual.

Please be aware that restricting cookies may impact on the functionality and your experience of OPM websites.

Changes to Our Cookie Policy

Any changes to our Cookie Policy will be posted on our website.

For more information on how your personal data is used whilst visiting out site please see our website privacy policy.


Any queries or concerns about the use of cookies on this website should be sent by email to