Ugh, no. There are times when the Google Maps route would take way longer than even reasonably obvious alternative routes. Particularly in London. Google tries

Ugh, no. There are times when the Google Maps route would take way longer than even reasonably obvious alternative routes. Particularly in London. Google tries to pick the quickest route, but these roads are often way too busy. As usual it turns out that there are good & bad taxi drivers, and good & bad mini-cab drivers / companies too.