The Heathrow Express from Paddington reaches the airport in about 15 mins

https://rafaellkgz938.theburnward.com/taxi-to-heathrow-airport-costs-travel-times-and-when-it-makes-sense-1

The Heathrow Express from Paddington reaches the airport in about 15 mins. It’s the fastest rail preference, despite the fact that pricier than the Tube.