A 10pm curfew would be the 'nail in the coffin' for pubs and bars in Greater Manchester, operators have warned.Hospitality businesses are bracing for the opening time limit to be introduced across the region, as similar restrictions come into force elsewhere in England.As well as being a further blow to already financially stricken sector, industry leaders fear it will only shift the problem elsewhere, leading to more day drinking, house parties and large crowds leaving venues at the same