Banker (Banking)
The combination of roles in the Bombay police and as a London banker appears anomalous, but the presence of George Halliday as a partner in Herries Farquhar in 1816 appears to cement the identification of Simon Halliday of Lower Berkeley Street (d. 1829) as the Simon Halliday also shown as partner in 1816: normally reliable online genealogical materials show that a George Halliday predeceased his father Simon Halliday of Lower Berkeley Street (d. 1829) in 1820.
A predecessor firm of Lloyds Bank, purchased by it in 1893.
https://www.lloydsbankinggroup.com/Our-Group/our-heritage/our-history2/lloyds-bank/herries-farquhar--co/