I recently came across this brochure from McInerney homes for the houses on the South West side of Corfield Street and along Finnis Street. These homes were built around 1981 and so far this is the only information I’ve been able to find about them. They are very typical of suburban homes built in the 1970s and early 80s but as such seem a little out of place in Bethnal Green.
I also found an advert from an Prevost estate agents (now Look Property Services) for one of the houses from around 1983 which I’ve also reproduced below.
On a related note there’s now a very interesting (and tiny) house on Finnis street which seems to have been added to the side of one of the existing houses. You can see inside via the Rightmove website.