I want to book a train arrival into Paddington Station on a weekday in mid-September. From Paddington we will take a Black Cab to our rental flat in Earls Court. Riding the tube is out of the question, so please no advice in that direction. The two arrival times I'm considering are 1401 and 1521. We will need a bit of time in the station before hiring the cab, as we will be buying Travel Cards from the National Rail folks. If the train arrives on time, if estimate that we will be at curbside 20 minutes later or 1420 or 1541.
Will the earlier arrival make for a smooth cab ride?
Will the later arrival make much of a difference for the cab ride?