Thinking of trying Airportr for the first time as I need to be at LHR at 8am next week with 3 large bags to check. In the past I've booked a car, but I'm worried about traffic. Given I live right by a tube station with the Piccadilly line, would be much easier to head to the airport without baggage. I've skimmed through the more recent posts, but there's not a lot from this year. Overall I was wondering how people have found this service for departures? What problems should I look out for?