Googling on the 'net'
Pigot's & Co's Trade Directory 1830 Wiltshire
A few websites
Bradford on Avon Museum Pigot's Commercial Directory 1830
(If you Google, Woolley Street, Bradford Upon Avon there are some old ‘coloured’ photos dated 1850 etc.)
Under: Painters, plumbers, glaziers
NICHOLLS, Michael, Woolley Street
At least it shows Michael was there in 1830.
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AUCTIONEERS
Nicholls, Samuel, near the Bridge
Also under the Heading: Miscellaneous is:
GERRISH, James, Hackney Master, Mill Street.