For us to ensure that the account is yours, please provide as much information as possible.
We will use this to contact you. If you are a member, this should match the email address on your account.
Type in to a search engine "what is my IP" from a network you have recently accessed the account from, before you lost access to it.
Although your NIN was anonymised when you joined, we can still check that your NIN is on our list, which gives us more confidence that you are actually registered.
Try to give an approximate month and year.
Such as a when you contacted us about something else, or a previous username.