"It’s a great privilege," he said. "I hope I will be able to bring my experience to bear."
"It's no secret that I have been taking my qualifications and I see this as the first step in my future career.
"I'm really looking forward to working alongside David and the team."
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Margot James was asked about her own experiences of receiving abuse on the internet.
The peer told Peston on Sunday he needed to have a discussion with his partner of 20 years.