A wooden gallery was built at the west end in 1723.
The gallery was built on the site of an old fruit market.
In 1833 a gallery was built and an organ given to the church.
The gallery at the outside of the mosque was built in 1840.
A new gallery around the church was also built to protect the wall tables.
A new lantern room and gallery were built in 1974.
In the following year, a gallery was built for the exhibition of drawings.
The gallery was built at the same time from Italian inspiration.
Despite a gallery being built in 1823 the old Georgian building becoming too small for the growing population.
This gallery at the entrance to the mosque was built in 1840.