Daughter Celia was up in London and visited the Foundling Museum and bought me a postcard of this. She knows me well.
From the wiki
also known as The March to Finchley or The March of the Guards, is a 1750 oil-on-canvas painting by English artist William Hogarth, owned by and on display at the Foundling Museum. Hogarth was well known for his satirical works, and The March of the Guards to Finchley has been said to have given full scope to this sense of satire; it was described by Hogarth himself as "steeped in humour".