People like C.N. Crawford

London Stone is a historic landmark housed at 111 Cannon Street in the City of London. It is an irregular block of oolitic limestone measuring 53 × 43 × 30 cm (21 × 17 × 12"), the remnant of a once much larger object that had stood for many centuries on the south side of the street.

The name "London Stone" was first recorded around the year 1100. The date and original purpose of the Stone are unknown, although it is possibly of Roman origin. There has been interest and speculation about it since the medieval period, but modern claims that it was formerly an object of veneration, or has some occult significance, are unsubstantiated.

The present London Stone is only the upper portion of a once much larger object. The surviving portion is a block of oolitic limestone approximately 53 cm wide, 43 cm high, and 30 cm front to back (21 × 17 × 12 inches). A study in the 1960s indicated that the stone is Clipsham limestone, a good-quality stone from Rutland transported to London for building purposes in both the Roman and medieval periods. More recently, Kevin Hayward has suggested that it may be Bath stone, the stone most used for monuments and sculpture in early Roman London and in Saxon times.