Once back here, I quickly found Dick Harris's Harringay Ladder – Speculative Attributions of Street Names posted on Harringay Online in 2011. Looking at it again today, I think it is very much the best speculative explanation I've seen. After the attempt failed, it was absorbed into the Harringay Park Estate. Disraeli Roads - the first part of the Ladder to be developed in a development unrelated to the British Land Company. (This was mistakenly called the "Finsbury Park Estate" in John HInshelwood's Harringay traders booklet, but as he admitted to me, he made the name up.