"The BBC's television, radio and online services remain an important part of British culture and the ..." — Pauline Neville-Jones

I am sorry to be leaving the BBC. I have enjoyed a fascinating seven years at the corporation and am particularly proud to have played a small part in the development of the BBC's Global News services, BBC World Service and BBC World.

As the BBC approaches the final phase of decisions about its future, it will be important for those involved to be established in post and ready to take responsibility for implementation of the outcome.

To a considerable extent we are faced by a technology arms race with terrorists. The communications revolution has made it easier for terrorist groups to reach out to vulnerable individuals with their violent extremist ideology and propaganda. It has also facilitated fundraising, recruitment and training.

The suicide bombers who struck London on 7 July 2005 killed 52 innocent people and wounded hundreds more. All of them must live with their memories. And the rest of us will always remember where we were when we heard that London had been hit by the worst terrorist attack in its history.