Tag Archives: A-Z

Secret London: deliberate mistakes in the A-Z


You can’t trust a map. Not even the A-Z.

A BBC TV programme several years ago first revealed to many people the news that the A-Z contains deliberate mistakes. These ‘trap streets‘ are inserted as a way to protect copyright – if the map is reproduced or copied without permission, the map manufacturers will immediately be able to spot them (see more here).

(A comment at Reddit clarifies this: the map itself cannot have a copyright as it is a “representation of fact… The trap streets and deliberate mistakes change the work from being purely factual into a creative expression and thus able to be protected by copyright.”)

Nobody is quite sure exactly how many mistakes each A-Z contains or where or how long they last for, but the BBC said there were about 100 and named one, Bartlett Place, a real street which was actually called Broadway Walk and renamed thus in future maps.

Another deliberate mistake can be seen on the photo at the top of this page. Can you spot what it is?

See the ‘ski slope’ in the park just next to the city farm? That’s one of the A-Z’s little phantoms. It comes from an old copy of the A-Z (and many thanks to reader Andrew Lyn) for sending the photograph, as the ‘ski slope’  hasn’t been used for about a decade.

If anybody is aware of any other other deliberate mistakes in recent A-Zs, please let us all know.


Phyllis Pearsall and searching for truth in the A-Z

I’ve written before about the urban legend surrounding Phyllis Pearsall, and her oft-repeated claims that she created the A-Z by walking every inch of London streets even though she could have just picked up the London street atlas created by her father, Alexander Gross, a few years before.

Pearsall related how she single-handedly created the A-Z in a pair of self-published unreliable memoirs and this became the definitive account after the publication of this biography. The story of Pearsall’s life has now been made into a musical, The A-Z Of Mrs P, at Southwark Playhouse.

The veracity of Pearsall’s claims is robustly challenged by her half-brother, Alex Gross, who has created a website dedicated to establishing the truth behind the creation of the A-Z and the key role played in it by his and Pearsall’s father, Alexander Gross. The image below comes from Gross’s map and show how much it looks like the A-Z. An excellent comparison of the two maps can be found in Peter Barber’s London: A History In Maps.


A summary of Gross’s argument can be found here. Gross is hugely critical of the story Pearsall created. He is adamant that Pearsall was operating at the direction of her father to update his already existing London street atlas and is dismissive of her claims that she walked the streets for 18 hours herself, or delivered early copies of the A-Z herself by wheelbarrow. I have no way of telling whether Gross is accurate in his own recollections, but I know that his skepticism towards Pearsall’s claims are shared by Peter Barber, who is head of the map collection at the British Library.

Gross is scathing about Sarah Hartley’s book on Pearsall, Mrs P’s Journey, claiming it has more in common with ‘chick lit’ than it does biography (never having read either ‘chick lit’ or Hartley’s book, I cannot pass opinion on this). Gross also casts a withering eye over Pearsall’s own books about her life in great detail. There is also considerable biographical material on Gross’s relationship with both his father and half-sister, later describing her as ‘urbane, witty, and utterly personifying the spirit of the English eccentric’, something that goes a long way towards explaining why her version of history has been so widely embraced by the British public.