He lived at Russell House in 1725
Following from The History of Parliament:
Prime warden, Fishmongers’ Co. 1708-10; alderman, London 1712; director, Bank of England 1705-19, 1723-d. (with statutory intervals), dep. gov. 1719-21, gov. 1721-3
An eminent merchant, trading with Flanders, Scawen was returned for London as a government supporter in 1715, after standing for it unsuccessfully in 1713. He voted with the Government except on the peerage bill, which he opposed, but did not stand again. Three years before his death, 22 Sept. 1730, he was passed over for lord mayor because he had not qualified by serving as sheriff.