▁Town ▁Pl anning ▁Act , ▁under ▁which ▁the ▁state ▁built ▁low - rent ▁homes ▁( c oun cil ▁houses ) ▁for ▁the ▁working - class . ▁Add ison ▁also ▁review ed ▁and ▁increased ▁the ▁prov isions ▁of ▁the ▁National ▁In sur ance ▁system , ▁and ▁introduced ▁program mes ▁to ▁improve ▁health care ▁and ▁training . ▁However , ▁he ▁pres ided ▁over ▁large ▁increases ▁in ▁public ▁sp ending ▁and ▁this ▁raised ▁the ▁i re ▁of ▁Conserv atives ▁in ▁the ▁government . ▁He ▁was ▁moved ▁from ▁the ▁Ministry ▁of ▁Health ▁in ▁April ▁ 1 9 2 1 , ▁becoming ▁Minister ▁Without ▁Port folio . ▁Add ison ▁res igned ▁in ▁July ▁ 1 9 2 1 ▁when ▁a ▁Cab inet ▁committee ▁decided ▁to ▁halt ▁the ▁housing ▁construction ▁scheme ▁altogether ; ▁he ▁subsequently ▁became ▁a ▁strong ▁critic ▁of ▁the ▁government . ▁▁ 1 9 2 2 – 1 9 3 7 ▁Add ison ▁lost ▁his ▁seat ▁in ▁the ▁ 1 9 2 2 ▁general ▁election . ▁Since ▁the ▁end ▁of ▁the ▁war , ▁he ▁had ▁found ▁himself ▁increasing ly ▁det ached ▁from ▁both ▁war ring ▁fa ctions ▁of ▁the ▁Liberal ▁Party . ▁His ▁belief ▁in ▁social ▁reform ▁and ▁progress ive ▁policies ▁brought ▁him ▁close ▁to ▁the ▁social ism ▁of ▁the ▁Labour ▁Party , ▁and ▁he ▁campaign ed ▁for ▁Labour ▁candidates ▁at ▁the ▁ 1 9 2 3 ▁general ▁election . ▁ ▁During ▁this ▁time ▁he ▁returned ▁to ▁his ▁family ▁farm ▁and ▁published ▁a ▁number ▁of ▁books , ▁including ▁The ▁Bet ray al ▁of ▁the ▁Sl ums ,