I loved the TV Series even more than I like the Radio Series and loved the books. All part of my early years. Then I moved to London to work in a tech company in Islington and was surprised to see signs for the local estate agents ("realtors"? in the US)...
If you haven't read The Restaurant at the End of the Universe that may not mean much but if you have he plays in Disaster Area.
Douglas lived in Islington. Strangely I now live near Liff (see The Meaning of Liff)