Mixing friends is chemistry. Add people to a beaker and wait. You usually get a reaction. Sometimes it bubbles along nicely. And sometimes it blows up in your face.
At 4.45am the alarm went off and I was out the door by 5.15am, to make the very first Circle Line tube of the day from Kings Cross at 5.31am to make the 6am National Express bus from Liverpool St to make the 8.30am flight from London Stansted to Budapest. All going well.