He also completed work in Lecce, Sicily for the Greek church Chiesa Greco-Ortodossa di San Nicola.

Britannia is characterised by the usual emblems of the shield and spear, and guarded by a lion, which lays tamely by her side, pleased with the offerings made her from the different East-Indian provinces.

At the foot of the rock lays the genius of the Ganges, in a majestic attitude, pouring out his whole stream on Britannia's footstool.

The various provinces are represented under the Conduct of Mercury, the god of merchandise, eagerly pressing to deposit their different produce and manufactures before the throne of Britannia.

Calcutta (the capital settlement of the Company in Bengal) presents a basket with pearls and other rich jewels, which Britannia receives.

China is characterised by jars of porcelain and chests of tea; the produce of Madras and Bombay by a corded bale; Bengal is denoted by an elephant, palm-trees and a camel.

Persia appears at a distance bringing silks, drugs, and other effects, and with her are to be supposed all the rest of the provinces; which the artist could not describe on the canvas without crowding or destroying the whole composition, and harmony of the picture.

At a distance is an Indiaman under sail, laden with the treasure of the East, an emblem of that commerce from which both Britain and the Company derive great and singular advantages.

Other works by Roma in the British National Trust collections include An Illusionistic Gothic Patron's Pew, in the Extension of the Chapel (c.1769/1771).