I thank the hon. Lady for giving me notice of this matter. Responsibility for answering parliamentary questions lies with the departmental Ministers concerned. I certainly agree that it is unsatisfactory if Ministers do not respond to questions in the expected timescale, and to be so late in responding to a named day question would appear to be particularly unacceptable. Successive Leaders of the House have also accepted a responsibility to take up such tardiness of reply, or indeed non-reply, with departmental Ministers.