Black cabs are always more expensive than callable taxis, that's the way it works in the UK. You're comparing limes to lemons. Similar, but different and differ

Black cabs are always more expensive than callable taxis, that's the way it works in the UK. You're comparing limes to lemons. Similar, but different and differently priced. There's different rules between the two, that's why the black cabs tried to get a ruling saying that booking an uber was like hailing a taxi rather than booking it. Many other taxi companies in the UK now have apps too and are pretty much the same price as Uber as far as I can tell in all the trips I've taken in Nottingham.