There would be no point in them asking you if you still want to be considered unless they WANT to interview you. Doesn't make business sense as it just creates more work for them. They're not going to email people 18months later to say "sorry, but no thanks" are they? They're just checking that you still want to attend the assessment day before they start ringing everyone. Otherwise it wastes their time, if half the people who originally applied are no longer interested.
