Alignment of Wightman and Hornsey Park Roads

The question of exactly when Wightman and Hornsey Park Road were aligned has been asked a few times. I've been able to give a rough answer, but this snippet I stumbled across earlier in the year whilst looking for something else, helps pin it down.

And another from 'Road and Road Constuction, 1972

....and once you start searching...Hansard from April 1972 lists the following scheme as having been added to added to the 'forward programme during the six months ended 31st March, 1972':

Turnpike Lane/Wightman Road/Hornsey Park Road junction, Haringey