I'm planning on using Totally Driven to get to/from Heathrow for my trip to London in November (if anyone has any super negative experiences with them, please share!) and I'm totally stumped on what time to book the car for going to the airport when we depart to head back to the States. We're flying out of Heathrow at 9:55am on a Sunday, so going off the 3hr rule, we'd have to be there at 6:55am. We're staying in NW3 (Palmer's Lodge - Swiss Cottage). How much time should I give us to get from the hostel to Heathrow? An hour? 30 min?
Thanks in advance!