My Lords, the administration is fully aware of the problem with mice in the Palace of Westminster. I saw one in the Bishops’ Bar only yesterday evening. I do not know whether it was the same one that I saw the day before or a different one; it is always difficult to tell the difference between the various mice that one sees.
The trouble [with reporting mice by telephone] is that when the person at the other end of the helpline goes to check this out, very often the mouse has gone elsewhere.
Lord Brabazon of Tara
UK House of Lords