We use an electronic booking system which also keeps records of the training you have completed over the years. If you contact us in the future to query any aspect of you training (eg you may have lost a certificate and wish to know when it runs out) then it is important that we are able to find you on our systems. It is equally important that we allocate your award to you at the time of training rather than to someone who happens to share your name. We therefore use the NI Number to uniquely identify each person.