Thank you Mark. I generally don’t tip car service, but will if they do something special (no innuendo intended).
Last i was in I planned on train but we were all bushed so I grabbed a black cab (to Soho). Pretty darn pricey. All these are better priced options.
Heathrow express is good for a single traveler with a final destination near Paddington.
Been here (London) for nearly 30 years now.