A summary of our technical information sheet on the topic in a simpler, easy to read format.Download (PDF 0.65MB)
You are using an outdated browser which we do not support. Please upgrade your browser to improve your experience and security.
If you have any further questions regarding this, or any other matter, please get in touch with us at firstname.lastname@example.org. We aim to respond to all queries within two working days. However, due to the high volume of correspondence that we receive, it may occasionally take a little longer. Please do bear with us if this is the case. Alternatively, if your query is urgent, you can contact our Supporter Engagement Team on +44 (0)1483 521 953 (lines open Monday to Friday 9am to 5pm).