Flew with another colleague, into Heathrow on March the 12 from Toronto, on an air Canada 787.....about 40-50 pax max on board.....and that’s a stretch. Plenty of documents to present at departure and arrival. We’re essential services ( Aerospace Engineers). I Was here few months ago before the lockdown. And compared to September 2020, I was horrified by how empty this time, Heathrow was at 9am. During boarding in Toronto, I was trying to look at people’s passports by curiosity. they were mainly British citizens, if that’s what you’re wondering.