For those of you who don't do them with regularity, a day to the Canaries from Scotland or the North of the UK is significantly longer duty hours and more flying time than an East Coast sector. It involves probably a 4am alarm, nearly 5 hours sat on your backside, sometimes sporty Canaries approach, all of a sudden, rapid turnaround on the ground, then 5 hours home. If it's your first day on earlies as someone else mentioned you are probably bushed as you didn't sleep that well. Do TCX have a controlled rest policy? If not, did either crew member have a nap in flight anyway?
All information I would rather the AAIB had developed. I am always very careful when driving home after a day like that at the end of a block of duty. Some like them as they're easy money, but I would much rather a shorter or busier day. They really aren't any fun in the winter when after taking off in the dark, you again have to land at night in typically Scottish wind and rain.