There are a couple of apps you can use to get a black cab. They help to avoid an annoying argument with the driver about cash vs card and you can wait inside un

There are a couple of apps you can use to get a black cab. They help to avoid an annoying argument with the driver about cash vs card and you can wait inside until the cab arrives. Uber is still cheaper though (excepting surge pricing) and late at night both have patchy availability to be honest.