Hi Peter,
I would suggest Samuel Laycock and Sons, Portobello Place ( corner of Portobello Street and Charlotte Street) . This would be 5 minutes walk from Brook Lane, just the other side of St George’s churchyard. In 1884 there was a controversy regarding smells from Laycocks – when they were busy and the hair-washing water was poured down the sewer hot, it liberated noxious gases.
Cheers,
Edmund