working paper no 57 00 competition and innovation in 1950 s britain stephen broadberry nicholas fr crafts department of economic history london school economics 2000 the econometric analysis uses data on innovations collected by science policy research unit deposited as file sn 1675 at archive university essex we are also indebted to mary o mahony george symeonidis for making available unpublished us philip epstein regina grafe adam wright assistance centre performance warwick financial support thanks tom howard gospel tim leunig participants business seminar lse comments an earlier draft abstract find little schumpeterian hypothesis a positive relationship between market power even though many economists policymakers accepted it time price fixing agreements were very widespread prior 1956 restrictive practices act they seem have had adverse effects costs productivity appears
