1.   The panel which carries a wave-chevron pattern is perfectly matched with the radial design and the design of a quartered square.

2.   Eventually, as the pavements from North Hill and Verulamium lead one to expect, this should have resulted in the appearance of full radial designs.

3.   It is only with the sequence of fully centralised, circular and radial designs that clear parallels are visible.

4.   Again, therefore, the importance of radial designs is clear.