Complex sentence: In the 1940s, Beveridge credited the Eugenics Society with promoting the children's allowance, which was incoroporated into his 1942 report, though he did not believe the report had any overall "eugenic value".
Split into simpler sentences: In the 1940s, Beveridge credited the Eugenics Society with promoting the children's allowance, which was incorporated into his 1942 report. However, whilst he held views in support of eugenics, he did not believe the report had any overall "eugenic value".