In my new book (priced £15.99) I also have plenty of evidence* that it was actually Jim Smith of Southend.
*speculation, made up BS and non peer-reviewed scientific "facts"
I prefer the Viz explanation that it was actually Blakey from On the Buses, who's rage at Butler and Stan the Conductor caused a tear in the space/time continuum that allowed him to travel back to 1880s London.
I also find it amusing that the Daily Mail, that supporter of free movement of Eastern Europeans, is happy to run a story that pins the blame on a Polish immigrant. Who'd have thunk it?