From Chapter 1:
Who first smoked a pipe of tobacco in England? The honour is divided among several claimants. It has often been stated that Captain William Middleton or Myddelton (son of Richard Middleton, Governor of Denbigh Castle), a Captain Price and a Captain Koet were the first who smoked publicly in London, and that folk flocked from all parts to see them; and it is usually added that pipes were not then invented, so they smoked the twisted leaf, or cigars. This account first appeared in one of the volumes of Pennant's "Tour in Wales." But the late Professor Arber long ago pointed out that the remark as to the mode of smoking by cigars and not by pipes was simply Pennant's speculation. The authority for the rest of the story is a paper in the Sebright MSS., which, in an account of William Middleton, has the remark: "It is sayed, that he, with Captain Thomas Price of Plâsyollin and one Captain Koet, were the first who smoked, or (as they called it) drank tobacco publickly in London; and that the Londoners flocked from all parts to see them." No date is named, and no further particulars are available.

From Chapter 8:
Angelo gives some lively pictures of scenes of this kind in the London of about 1780. The Turk's Head, in Gerrard Street, was the meeting-place for "a knot of worthies, principally 'Sons of St. Luke,' or the children of Thespis, and mostly votaries of Bacchus," as the old fencing-master, who loved a little "fine writing," describes them; and here they sat, he says, "taking their punch and smoking, the prevailing custom of the time." About the same time (circa 1790) an evening resort for purposes mostly vicious was the famous Dog and Duck, in St. George's Fields. "The long room," says Angelo, "if I may depend on my memory, was on the ground floor, and all the benches were filled with motley groups, eating, drinking, and smoking." Angelo also mentions the "Picnic Society," a celebrated resort of fashion at the beginning of the nineteenth century, where the odour of tobacco never penetrated. It afforded, he says in his fine way, "a sort of antipodeal contrast to these smoking tavern clubs of the old city of Trinobantes." The same writer speaks of a certain Monsieur Liviez whom he met in Paris in 1772, who had been one of the first dancers at the Italian Opera House, and maître de ballet at Drury Lane Theatre. This gentleman was addicted to self-indulgence, loved good eating, and good and ample drinking, and moreover kept "late hours, Ã l'Anglaise, smoked his pipe, and drank oceans of punch."