Our colleague Andrew Behan, tracked this down to "West Hampstead Amenity and Transport".
January 2024: John Davis provided this link to the organisation: "WHAT started in 1973 as a protest against traffic schemes that would have turned some of our local streets into major through roads."
This section lists the memorials created by the subject on this page:
West Hampstead Amenity & Transport (WHAT)
We discovered the plaque through the Stationmaster app. This is rather sad. ...
Founded in 1882 by Constance Louisa Maynard and Ann Dudin Brown, as a residential women's college modelled on women's colleges already established in Oxford and Cambridge. The name probably came fr...
Formed by Chad Varah at St Stephen Walbrook Church to befriend the suicidal and despairing. The Samaritans gives a good history of the organisation including how it was named: "Chad Varah had achi...