We spotted this on the Central Line at White City recently – at the western end (front of the train) of the westbound platform.
It’s a flower box, with stickers celebrating 150 years of the Underground, and for reasons that we can’t fathom – the Bakerloo and Circle Lines, and one for the Overground too.
But we like the two roundels in the bottom left of the photo best, where the Overground is called ‘Over Rated‘ and the tube coloured one ‘Under Rated‘. Someone at White City doesn’t think the Overground is that great, huh?
Not a fan of the Overground