This is what the regional breakdown of the UK looks like when based on 12 billion anonymous phone records of communications between residential and business landlines.
The map was created by staff from the Massachusetts Institute of Technology (MIT), Cornell University and University College London and is a striking image of how telephone communications across country stay mostly within clearly defined regions.
There are some notable exceptions though, as Carlo Ratti, director of the MIT SENSEable City Lab and one of the paper's authors, noted.
"The difference between Scotland and Wales is striking. Based on our landline data, Scotland is very separated from the rest of Great Britain: just 23.3 per cent of all call time placed or received there goes to or comes from another part of the country," he said.
"Conversely, Wales, in spite of its unique cultural and linguistic heritage, is well integrated with its English neighbors to the East."
Ratti added he believes there is further value in this work for analysing and potentially altering political boundaries and that the scope for doing so will increase further as data from other networks, namely the internet, becomes more available for analysis.
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