North American English
There are a considerable number of different accents within the regions of both the United States and Canada, originally deriving from the accents prevalent in different English, Scottish and Irish regions of the British Isles and corresponding to settlement patterns of these peoples in the colonies. These were developed and built upon as new waves of immigration, and migration across the North American continent, brought new accents and dialects to new areas, and as these ways of speaking merged and assimilated with the population. It is claimed that despite the centuries of linguistic changes there is still a resemblance between the English East Anglia accents which would have been used by early English settlers in New England (including the Pilgrims), and modern Northeastern United States accents. Similarly, the accents of Newfoundland have some similarities to the accents of Scotland and Ireland.
British English
Since the mass internal immigration to Northamptonshire in the 1940s and its position between several major accent regions, it has become a source of various accent developments. In Northampton the older accent has been influenced by overspill Londoners. There is an accent known locally as the Kettering accent, which is a transitional accent between the East Midlands and East Anglian. It is the last southern Midlands accent to use the broad "a" in words like "bath"/"grass" (i.e. barth/grarss). Conversely "crass"/"plastic" use a slender "a". A few miles northwest in Leicestershire the slender "a" becomes more widespread generally. In the town of Corby, north, one can find Corbyite, which unlike the Kettering accent, is largely influenced by the West Scottish accent.