[2] Through his wife's connection Chamier obtained a place in the public service; and in January 1772 was promoted by Lord Barrington to the post of deputy secretary at war.
[2] Chamier was created under-secretary of state for the southern department in 1775, and on 10 June 1778 was elected Member of Parliament for Tamworth.
[2] Chamier was an original member in 1764 of the Literary Club, and Samuel Johnson, when drawing up his scheme of a university at St Andrews, assigned to him the chair of "commercial politics".
His country house was at Streatham; Johnson used to visit there, for example on his seventieth birthday, and asked Chamier for favours on behalf of acquaintances.
[2] Chamier married Dorothy, daughter and coheiress of Robert Wilson, merchant of St Mary Axe, London.