Your instructor will sign your log book and if he is also an examiner will also sign your rating certificate. If he is not an examiner, he will probably know of one who will sign it for you. ( provided it is within 3 months of expiry) Most examiners do not charge for a signature . You will not need aircraft logs, only your flying log book. The examiner will also require you to sign a form which he will submit to the CAA for you.