I've seen a few traction engines around Mike, but mostly farm ploughing or thresher drivers. I've not yet seen a proper Showman's engine in paper.
Back in the day, I remember one like this arriving at Raphel's Park, Romford. It was fully illuminated and had hauled a train of seven fairground trailers all the way from Southend. I think these road trains finally got banned in the early 60s, but what a show they put on, eh?