A complete move to Sherman tanks was not acceptable to British forces who would then be dependent on the US for tank production. At the same time, Cromwell with the Meteor engine and a HV weapon was shown to have superior power "and" armament, while US efforts to produce the Sherman replacement, the T20 Medium Tank, were not receiving sufficient attention. The impact of ceasing tank manufacture in Britain would keenly be felt by workers and the war economy at home.