Just occasionally, for good behaviour, I'm allowed out of Westminster. I was recently despatched to see Lord Snowdon, who was happy to share his memories of the 40th anniversary of the investiture of the Prince of Wales.
Lord Snowdon's role as constable of Caernarfon Castle was to organise the ceremony. Whatever you think of the monarchy - or the investiture - it was fascinating to hear the memories of a key player at the time.
You can read and hear more here. Lord Snowdon is a little frail these days but was very generous with his time.
He also find time to have a chat about photography after the interview and sign a book of his photographs for me. I really should get out more.