Researching travel options to Edinburgh from London. Staying in Holburn area.
What time would you recommend heading into the tube for a 10:00 am flight (Sunday) from LHR?
How about a 10:00 am train from Kings Cross?
With the extra time to travel to airport and deal with security, flying may not be much faster door to door than train. It is more expensive to fly, but not very much it seems.