Old Southwark Town Hall, Walworth Road SE1

After 1820 building proceeded apace, but as late as 1853, when Harriet Beecher Stowe stayed with the Rev. Thomas Binney at Rose Cottage on the site of the present Town Hall, she found it a "charming retreat" with a view from the windows of sheep and lambs grazing in a meadow.
Built in 1864–66 from the design of Henry Jarvis.
I used to think these were portrait heads, but now I think it is more likely they are personifications of winter and summer.