Actually Lu, I stopped too soon anyway:. Below is a complete search going to earlier years, and also including some occasions where it appears that a change of occupation occurred. I have included previous results in the list to make it complete.
1833 Jessop William, fruiterer, 64 Livery St
1841 Jessop William, shopkeeper, 81 Livery St
1845-49 Jessop William, greengrocer, 81 Livery St
1851 Jessop.William, fishmonger 81 Livery St
1855 Jessop William. muffin & pikelet bkr. 163 Bromsgrove st
1855 Jessop William, greengrocer. 163 Bromsgrove st
1858 Jessop William, greengrocer. 162 Bromsgrove st
1862 Jessop Mrs Mary. muffin & pikelet bkr. 163 Bromsgrove st
1867 Jessop William. muffin & pikelet bkr. 163 Bromsgrove st
1868-73 Jessop Mrs Mary. muffin & pikelet bkr. 163 Bromsgrove st
1845 Jessop.William, muffin & crumpet maker, 15 bishopgate St
1849 Jessop.William, shopkeeper, 80 bishopgate St
1852-55 Jessop.William, baker, 90 bishopgate St
1858 Jessop.William, muffin maker, 59 Latimer St south
1867-68 Jessop William, baker, 68 Ryland st. north
1872-76 Jessop William, baker & confectioner, 68 Ryland st. north
1878 Jessop William, confectioner, Wood St, Ladywood
1879 Jessop William Henry confectioner, Wood St, Ladywood
1880 Jessop Hubert Cornelius, beer retailer, 95 Morville street
1884 Jessop Hubert Cornelius, baker, 30 Park street, Higbgate
1868 Jessop Thos., muffin maker 119William st
1872 Jessop Thos.Valentine, muffin maker 119William st
1873-76 Jessop Thos.Valentine, baker & flour dealer 119William st
1880-84 Jessop Thos.Valentine, muffin & crumpet maker. 119William st
1888-1903 Jessop Thos.Valentine, muffin & pikelet maker. 75 St Martins St
1899-1915 Jessop Hubert C. , muffin & pikelet maker, back 28 Blythe St. Ladywood
1899-1900 Jessop, William, baker 61 Mansfield Rd Aston
1903 Jessop, William,Henry baker 296 Highgate road
1904-1905 Jessop Harry, muffin & pikelet maker, 75 St. Martin's street
1908 Jessop Harry, muffin & pikelet maker, 71 St. Martin's street
1910-1921 Jessop Harry, muffin & pikelet maker, 73 St. Martin's street
1912-1915 Jessop John William Pikelet baker 36a New St Aston New Town
With regard to bakers in yorkshire I have found :
1822 Jessop Bridgett, flour dealer, 44 Pond St, sheffield
1834 Jessop George , baker & flour dealer high st rotherham
1872 Jessop William, baker, 60 Hyde Park rd leeds