The consequences would include whoever was PM (most probably Butler if Conservative and Bevan if Labour, Gaitskell only started opposing Suez once it had failed) being seen as a weak and vacillating appeaser and ousted the next year in the general election. If not before in Cabinet coup. Quietly poisonous relations with France from 1956 onwards. No Concorde, no Jaguar, no Gazelle and probably no EEC entry in 1973 either. OTL Macmillan initiated the trend towards European integration in the early sixties. TTL it would be so unrealistic a prospect (opposed by the French political class rather than by de Gaulle) that the Europhiles would not rise to or continue to hold positions of authority in the FCO and foreign policy objectives would be aimed at trade and alliances with the wider world. Faster erosion of British prestige in the Middle East (OTL Britain, France and Israel were winning when the Americans blew the whistle and Arab leaders and military commanders well aware of this, had to bear in mind that next time the Americans might not call them off). Probably some of the defence cuts of the sixties and seventies might not have gone ahead due to need to display military strength after show of weakness-can't see the 1957 Defence White paper appearing on schedule with political disruption and 1957 being a bit of a Jingo election. No Macmillan years, no Polaris agreement and continued independent British nuclear deterrent. Probably if Labour came to office in 1957, George Brown out of the running by Gaitskell's death and Wilson never gets to be party leader (probably Callaghan, possibly Robens).