Chapter XIII: Act 18: and 19 Vict., c. 27. The Times of 5 Aug., 1839, gives us

"A return of the number of Newspaper Stamps issued to the several
Newspapers in London, from 1 Ap. to 29 June, 1839, inclusive;
specifying each Newspaper by name, and the number of Stamps issued
each month during that period to each Newspaper."

April. May. June. Morning Chronicle 180,000 210,000 140,000 Morning Post 85,000 90,000 80,000 Morning Herald 140,000 175,000 140,000 Times 330,000 330,000 430,000 Courier 29,000 33,000 27,000 Globe 72,000 90,000 72,000 Standard 83,000 80,000 101,000 Sun 111,000 105,000 105,000 Evening Chronicle 30,000 20,000 10,000 Evening Mail 25,000 50,000 35,000 St. James's Chronicle 52,000 58,000 66,000