Hi everyone! I need to ask for the collective wisdom of London Mumsnetters about transport. On Tuesday next week I'll be coming into Kings X by train, and need to continue by tube to Heathrow. Does anyone know the easiest way to do this, bearing in mind I will be towing a large heavy suitcase. It will be around lunchtime, so not rush hour. Which route would anyone suggest to minimise train changes or steps? TIA