The very first roundel starts life as a platform nameboard at the station we now call St James's Park. Originally known as the bar and circle, the red, glassy, enamel disc with th… See more

The new logo begins to appear on map covers, station exteriors, posters and other publicity. There aren't any guidelines at this point so artists use the bar and circle freely and imagin… See more

To establish their independence, Metropolitan Railway introduce an alternative version of the roundel. It has a blue, station name plate mounted on a red diamond. I… See more

The new typeface is put on the bar and circle and is registered as a trademark in 1917. Between 1920 and 1933, Johnston designs several different versions of the bar and circle s… See more