Did you know four blue plaques feature a different font to the others?
They are, of course, the plaques commemorating the pioneers working for London's transport system around the time Edward Johnston developed his iconic typeface.
It's now over 100 years since Johnston's eponymous typeface was introduced onto London's transport system in 1926.
The other men commemorated with blue plaques featuring the Johnston font are Harry Beck, the man behind the Tube Map...
...Frank Pick, the chief executive of London Transport in the 1930s, a man with unrivalled flair for design-management...
...and their boss, Lord Albert Stanley Ashfield, the first chairman of London Transport.
The blue plaque scheme is open for nominations. Who do you think should get a blue plaque?
