I will be going to Warwick Business School in September '13. I will be arriving at Heathrow airport, London. I wanted to know the best and most reasonable way to get there. I will be carrying rather heavy luggage (being a student). Should I take a train, if so, then how to get to the railway station from Heathrow, and which railway station in London has trains to Coventry? Is there a better or more efficient way to get there with the heavy luggage I will be carrying?