This from the Metro (with a bowler tip to Obnoxio)
UPDATE: This just in from a Mr Gregory...
Construction of Paddington started in 1850 but the station didn't actually open until 1854.
You can't spank a train to a station that isn't open yet.
However, as we now have a Paddington I suggest that Geoff Hoon tries recreating this task as a form of penance.
I know - I need to get out more.