The St James Chronicle and General Evening Post, 12th August 1834:
AROMATIC SPIRIT OF VINEGAR. -
This agreeable perfumed liquor (the original inven-
tion of Mr. Henry) which is of well-known efficacy in
relieving faintness and headach*, and in counteracting the
effects of overheated, close, or infected air, continues to be pre-
pared, in the greatest perfection, by Messrs. Thos. and Wm.
Henry, Manufacturing Chemists, Manchester. It is sold in
London, wholesale and retail, by Messrs. Bayley, Blew, and
Chapman, perfumers, Cockspur-street; and retail, price 2s. 9d.,
by one or more agent in every principal town; but it cannot be
genuine unless the names of the above preparers are engraved
on the Government Stamp, which is fixed over the cork of each
bottle. Proper Sponge Boxes are sold by Bayley, Blew, and
Chapman, as usual.
* spelling as in advertisement
Bayley and Blew were in Cockspur Street from before 1813. Chapman joined later.
The fact that this is your man is shown by reports in the newspapers of partnerships being dissolved. In 1837 there is a report of the dissolving of the partnership of "William Blew and John Henry Chapman, Cockspur-street, perfumers."
Obviously the place to go if you wanted your vinaigrette topped up.