A 150-seat restaurant and 35-seat cafe occupy much of the wing's mezzanine level and command a view toward Nelson's Column through the facade's tall arcade.

The interior is divided by three tall arcades into four unequal sectors.

They are comparatively wide, and often have very tall arcades surmounted by low clerestories, giving a similar spacious appearance to the hallenkirche of Germany, as at the Church of the Batalha Monastery in Portugal.

The lower level of the building is a tall arcade of round arches and pilasters with detailed capitals.

The middle six bays of the facade project slightly, separated by pilasters with foliated caps, forming a tall arcade.

The spacious interior has tall arcades with mediaeval clerestories over them and heads between the arches, and eight fine oak angels look down from the hammerbeams of the roof.

It presents a French style arrangement of very tall arcade, a delicate narrow triforium gallery lit by windows and with detailed tracery merging with that of the windows above.

There are half-cupolas framing the dome, and the side walls are given rhythm by a tall arcade.

The tall arcade, supported by graceful colonnettes, gives the interior space a feeling of openness and adds to the grand sense of scale that the building imposes.

At All Saints' Church, Falmouth (1887-90), he unconventionally combined tall round-arched arcades with Gothic windows.