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.

When I first left university, I thought about going into the private sector. But I discovered when I went to interview that I could only have a career in the back office, or doing HR. The attitude was, "My dear lady, you cannot possibly think about going on the board.

Our work in Britain suggests that radicalization is driven by an ideology which claims that Muslims around the world are being oppressed and - and this is the key bit of the argument - which then legitimizes violence in their supposed defense.

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.

It is really important for women to look up and see other women being successful. When I was in that position, all I wanted to do was blend in and be one of the guys.

I was certainly never conscious of 'playing the woman'. I would not have approved of that. It is not a winning tactic. I operated in the world as I found it, and it was a man's world.

One of the marked characteristics of the U.K. security industry as compared with defence is the lack of company scale. This can put our firms at a competitive disadvantage when it comes to big contracts.