see Poland Street 1 to 9 & 49 to 62 in London Addresses dataset
John Taylor 1780 leaseholder of 1 to 5 Poland St (the leaseholder by 1789 was Alexander Scott (QV*)). Also a John Taylor leaseholder of 23 Poland St. A very common name but I wondered if this may have been the oculist John Taylor DNB 1724-1787.