During my brief visit to Heathrow, I got a bunch of long-haul departures and loads of single aisle types serving destinations closer in. However, I was caught off guard slightly by one 737 Max 8. It belonged to Air Canada. I’ve seen a few of those including when they were on test, but I hadn’t anticipated seeing one in the UK. However, the longer range of the Max means that Air Canada is using it serve Halifax from London. I guess that is not really much longer a flight than plenty in Europe, so it makes sense and is probably more efficient. I just didn’t expect to see one of their narrowbodies there. Given that the A321neos are now becoming so prevalent, this is likely to be a regular thing for other airlines too. JetBlue is already doing this so others will be too.