It is always important to look up, as well as down, when walking along London's streets, in case you miss something. This is how I discovered these signs, beneath various windows across older parts of the city.
Because I had never seen them before I now keep a look out for them, and other old signs.
But what does the term 'Ancient Lights' mean?
To discover the answer we must travel back to the 12th century, and the beginnings of English Common Law.
