This article offers a comprehensive survey of relations between the labour movement, socialists and official eugenic opinion from the late Victorian era to the Second World War. Drawing on a wide range of primary sources, it discusses both how the left regarded eugenics and the attempts by the Eugenics Society to gather support from this tendency. Although some socialists wished to utilize eugenics and some eugenists were friendly to labour, it is concluded that only peripheral labour organizations were truly attracted to the doctrine. The article provides a much more nuanced account than does the weight of past scholarship.
https://academic.oup.com/histres/article/90/250/764/5603562
there doesn't seem to be anything here