How do you get from Reading station to paddington tube station?

Take one of the frequent fast trains to London Paddington then hop on the southbound Bakerloo line to Oxford Circus. From there is it is simple cross-platform change onto the southbound Victoria line...

Take the Victoria line from Brixton to Victoria, then change for the Circle OR District line to South Kensington. Hope this helped!

About 1 hour

You could go by tube but the easiest way is to go by cab.

All depends which station in Kensington - go from Harlow Town to Liverpool Street on the train, then take the Circle Line (in either direction although eastbound's probably a bit quicker) to South...