▁reasons " ▁to ▁Joseph ▁Nathan ▁& ▁Company ▁Limited ▁a ▁company ▁incorpor ated ▁in ▁England . ▁It ▁was ▁required ▁to ▁register ▁as ▁a ▁public ▁company ▁in ▁ 1 9 1 3 ▁but ▁there ▁was ▁no ▁listing ▁for ▁dealing ▁in ▁shares . ▁▁ ▁Joseph ▁Nathan ▁& ▁Co ▁became ▁best ▁known ▁for ▁its ▁New ▁Zealand ▁made ▁d ried ▁cow ' s ▁milk ▁product , ▁Gla x o , ▁a ▁baby ▁food ▁developed ▁in ▁the ▁early ▁tw enti eth ▁century . ▁Its ▁brand - name ▁was ▁registered ▁in ▁England ▁in ▁October ▁ 1 9 0 6 . ▁▁ ▁Following ▁the ▁First ▁World ▁War ▁preference ▁shares ▁were ▁offered ▁to ▁the ▁public ▁in ▁ 1 9 1 9 ▁and ▁they ▁were ▁listed ▁by ▁the ▁London ▁Stock ▁Exchange . ▁ ▁Vit amin ▁supp lement s ▁were ▁added ▁to ▁the ▁range ▁of ▁products . ▁ ▁Gla x o ▁Labor ator ies ▁Limited ▁ ▁In ▁late ▁ 1 9 3 5 ▁a ▁new ▁wh olly ▁owned ▁subs idi ary ▁company ▁was ▁formed ▁to ▁take ▁over ▁the ▁assets ▁of ▁the ▁various ▁Gla x o ▁labor ator ies ▁depart ments . ▁New ▁fact ories , ▁labor ator ies ▁and ▁offices ▁were ▁completed ▁that ▁year ▁at ▁Green ford , ▁M idd les ex ▁and ▁ph arma ce ut ical s ▁including ▁pen ic ill in ▁were ▁added ▁to ▁Gla x o ' s ▁range . ▁So on ▁after ▁the ▁Second ▁World ▁War ▁share hold ers ▁liquid ated ▁Joseph ▁Nathan ▁& ▁Co ▁Limited ▁bu ying , ▁in ▁early ▁ 1 9 4 7 , ▁its ▁subs