Either side of the altar are these tiles, showing Alpha and
Omega, the first and the last letters of the Greek Alphabet.
Alpha is to the left, Omega to the right.
In contrast to similar sized groups of four tiles elsewhere
in the church, these panels are made of five tiles and the central
insert is circular. There are several advantages to this design.
One is that the corner tiles could be mass produced to take a
variety of inserts - the corner tiles for omega and the evangelists
are the same ones, for example. Also it means that the insert
could be aligned to the viewer, whichever way the tile pattern
was orientated. In the case of Alpha and Omega, the tiles are
angled diagonally at 45 degrees to the walls of the church, but
for the evangelist tiles they are square to the lines of the
The design of the central insert is quite intricate and forms
the focus of the group. Having it as a separate tile means that
the joins of the tiles don't cut through it.