GO 20 was launched today in Islington, London's first 20mph borough.
Children heard from Paralympian Danny Crates on how great it is to be active, took part in a safe cycling demo with Islington Council, carried out speed checks on traffic with help from the Met and celebrated 20mph by displaying their own banners and placards.
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But while he wasn't showing it, PC Tyler O'Hare was enjoying every minute of it.
The suffragist leader has been immortalised in bronze in Parliament Square.
Commuters could be caught out by the alterations which will see many existing trains leaving stations up to two minutes early.