Cookie Policy


This site uses cookies – small text files that are placed on your machine to help the site provide a better user experience. In general, cookies are used to retain user preferences, store information for things like shopping carts, and provide anonymised tracking data to third party applications like Google Analytics. As a rule, cookies will make your browsing experience better. However, you may prefer to disable cookies on this site and on others. The most effective way to do this is to disable cookies in your browser. We suggest consulting the Help section of your browser or taking a look at the About Cookies website which offers guidance for all modern browsers. We take privacy seriously and only use data collected for the purpose described. Any personal user information collected will not be used for any other purpose than administering your request and reason for submitting your details. This includes providing feedback or contacting us through our contact form. This privacy policy is subject to change, so please check back on this page from time to time.

Cookies used on this website:

We use a cookie to remember your acceptance of the licence for the Calculation. And one to remember your consent choices for the analytics system we use. Finally there are infrastructure cookies to make the site function.


Name Typical content Expires
QCovidLicence 'accepted' 1 day
CookieControl consent choices 3 months
ARRAffinity Random numbers & characters Session
ARRAffinitySameSite Random numbers & characters Session
.AspNetCore.Antiforgery.[numbers] Random numbers & characters Session


Name Typical content Expires
_ga_VDCREWK5LZ Random numbers 2 years
_ga Random numbers 2 years
ai_session Random numbers & characters, epoch time 30 minutes
ai_user Random numbers & characters, date & time 1 year

Introduction to cookies

In order to help facilitate the accessibility and ease of use of information on this website small files, known as cookies, may be placed on your browsing device. Cookies cannot be used to identify you personally. The information is used to improve the usability of the website and is collected by measuring how many people are using the service. This is done to ensure that the the site is easy to use and has enough capacity for quick loading of the pages. Cookies used on this website:

How to control and delete cookies

We will not use cookies to collect personally identifiable information about you. However, if you wish to restrict or block the cookies which are set by our websites, or indeed any other website, you can do this through your browser settings. The ‘Help’ function within your browser should tell you how. Alternatively, you may wish to visit the About Cookies website 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 machine as well as more general information about cookies. Please be aware that restricting cookies may impact the functionality of our website.