Originally conceived by a Labour government in 2009, the plan for a high-speed railway network connecting London with the north of England has evolved almost beyond recognition in the intervening years.
The line, which was meant to cost less than £35bn and run all the way to Manchester and Leeds, is now set to cost more than £100bn and stop in Birmingham.
The Government has even suggested it might not run at the record-breaking speed initially promised, meaning journey times might not be much shorter.
Here, The i Paper takes a look at the maps and charts which show exactly how HS2 was scaled down, rolled back and cut away to what is promised today.
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