China's BYD nears deal to supply London's electric double decker buses
cityam.com
cityam.com
[2015] There is no capital cost for London's first five pure-electric double deck buses on route 98 as these are being introduced as part of a lease agreement with the manufacturer BYD.
https://www.london.gov.uk/who-we-are/what-london-assembly-do...
I'm not sure if he's being deliberately disingenuous with that question, but if each bus is £100,000 cheaper then they're saving £10m when buying 100 of them. Of course there are other considerations here, but that's why.
Consider that manufacture something in a foreign country, transport it 21,000 km by sea and it is still cheaper than doing it in-house. This may sound awesome.
But digging deeper, a nation that favors import before domestic production, drawn to its extremes, can put itself at economic and geopolitical risk.