I've seen Brown refer to previous answers given by someone else which subsequently turn out to refer to previous answers given by him. I've seen previous answers to other completely different questions referred to as answers too, but, until now, I had not seen another answer referred to in response to a question where the other answer doesn't exist.
Fracnis Maude asked brown how many plasma screen Downing Street had bought in the last 24 mnths and Brown's responses "I refer the right hon. Member to the answer given by my hon. Friend the Parliamentary Secretary for the Cabinet Office (Tom Watson) today."
Does Watson's name appear responding to any questions for that day in Hansard? No he doesn't. Perhaps Tom can enlighten us with the answer that Gordon says he has given?