In response Lord Bach highlighted the little know right of subjects under s7 of the Data Protection Act to know who is asking questions about them by making a "Subject Access Request". This piece of information was swelcomed by people who had been victims of such "stalking" themselves.
The question can be viewed at (about 1 minute 20 seconds into the broadcast) http://www.parliamentlive.tv/Main/Player.aspx?meetingId=4715&wfs=true. (see also 3:20 minutes into the broadcast)