Eric Williams noted that William Miles 'bought a leading partnership in the old banking house of Vaughan and Barker', later the Miles Bank.
Capitalism & Slavery p. 101
Dissolution of partnership between P.J. Miles, John S[candrett] Harford, A[braham] G[ray] Harford Battersby, [Sir] Rich[ar]d. Vaughan, Wm Miles, Thos K[ington] Bayly in the business of bankers at Bristol
The London Gazette in 1844 showed the firm trading as the Bristol Bank and the partners as Philip John Miles, John Scandrett Harford, Abraham Gray, Harford Battersby, Thos Kington Bayly and John William Miles
London Gazette 18527 28/11/1828 p. 2212
London Gazette 20381 10/09/1844 p. 3127