The nature of the arcaded load
bearing structure imposed a discipline
on the way adaptations can be achieved
and it has been a constant objective
of the design team to achieve the 
brief with a minimum of expansion
outside the existing envelope.
The use of the "crossing" to site,
a glass sided lift and a sloping bridge
to the boardroom in the upper part of
the old chancel area allows the
exploitation of the full height of the
building to provide a single space
linking all levels.