I assume most of the comparisons are for black cabs, which are indeed more expensive but have unrivalled knowledge of getting around central London, as well as

I assume most of the comparisons are for black cabs, which are indeed more expensive but have unrivalled knowledge of getting around central London, as well as being allowed to pick up fares by being hailed on the street. There are fewer differences between Uber and minicab firms in London. Uber is a bit more expensive on short journeys and drivers lack any local knowledge so can end up taking longer routes, but cheaper for journeys going a longer distance because drivers don't have to return to their home area after dropping you off. Uber's app is better than the others I've tried, but not unique, and their drivers and cars tend to be nice, but so are most minicabs that I've used.