Oxford Circus Pillars
We only just noticed this the other day – we’ve known for a long time that the wall pattern tiles are Blue, Red and Brown to represents the three colours of the lines that pass through there – but we’ve only just realised too that the pillars in the ticket hall area also have the three colours to match the lines.
It’s subtle because the brown of the Bakerloo is at the bottom a bit dirty and goes unnoticed (a bit like the line itself), but it’s there, part of the three colours that make up the lines through Oxford Circus.