The son of John Newman (of the same name), a wholesale dealer in leather in Skinner Street, Snow Hill, London, and a common councillor of the ward of Farringdon Without, he was baptised at the church of St Sepulchre-without-Newgate, on 8 July 1786.
Newman was employed under Sir Robert Smirke in the erection of Covent Garden Theatre in 1809, and on the London General Post Office between 1823 and 1829.
He was honorary architect to the Royal Literary Fund from 1846, and to the Society of Patrons of the Charity Children's Anniversary Meeting in St Paul's Cathedral.
Some bronzes in his possession from the bed of the Thames were mentioned in a paper by Charles Roach Smith, read before the Society of Antiquaries of London in June 1837.
[1] In 1847, Newman exhibited before the British Archaeological Association an earthen vase of notable form found during the excavations for the new houses of parliament.