Ian Katz sends written apology to Labour after describing Rachel Reeves MP as 'boring' Although Mr Katz later aplogised to Ms Reeves on Twitter, Labour wrote to Mr Katz on Tuesday morning demanding a full public apology should be made by the end of the day. The party wrote: "We would like to express our anger and disappointment at your tweet following Newsnight's interview with Rachel Reeves. It is completely unacceptable for a senior BBC editor to have expressed this view, whether or not you intended for it to be made public. It is vitally important that the Labour Party, our Shadow Cabinet and Newsnight viewers have confidence in the impartiality and fairness of your programme, and the criteria on which guests and interviews are judged. This incident undermines that confidence and it is important that this is redressed. Although a tweet of apology has been made, a full written public apology should be made by the end of the day. In reply, Mr Katz wrote: "I'm only too happy to reiterate the apology I have already made to Rachel by text and on Twitter: I apologise unreservedly for my ill-judged remark about her appearance on Newsnight last night." He added: "I don't accept your implication that my tweet reflects in any way on the impartiality or fairness of Newsnight, except to the extent that it reflects a determination to make Newsnight as interesting as I can. I am acutely aware, however, that we ask quite a lot of guests when we invite them to come into the studio to do late- night interviews, and my tweet hardly conveyed the appreciation we owe them for making the trip. I particularly regret any personal offence or upset I have caused to Rachel and hope she will come on Newsnight again soon Mr Katz earlier apologised for the Tweet on Twitter. He said: "Accidentally sent v ill-judged tweet referring to @RachelReevesMP's appearance on NN. Mr Katz's wife Justine Roberts has also waded into the row, jokingly posting a message on Twitter telling her husband to resign. Several Labour politicians took Mr Katz's more comments more seriously, however, and suggested Newsnight could find it harder to attract party figures on to the show in future. Labour vice-chairman Michael Dugher wrote on Twitter: "Good luck in future to @BBCNewsnight in trying to persuade Labour people to go on their frankly rather boring programme at 11 at night ... And whilst I'm at it ... I'm not sure a guy who worked for the Guardian (yawn) & now Newsnight (snooze) can lecture people about being boring. Former cabinet minister John Denham posted: "Ian Katz helped me answer whether I wanted to go from Southampton to Glasgow to appear on Newsnight."