However, last night I tried something worth mentioning: the Iceland Scarily Spicy Carolina Reaper Chicken Curry. The packaging says 'Limited Edition' but it seems to have been around for a year or two, judging by the reviews I've found when googling.

It is properly hot. I tasted the tip of the spoon as I was serving it onto my rice, and decided not to tip the whole lot out. The chicken is actually pretty good, as is the texture of the sauce, but it has more heat than flavour (not unusual with a stupidly hot sauce). I described it as inedible to my wife but managed to finish half of it with quite a lot of rice and some cold San Miguel. I'd recommend trying it if you're into properly hot stuff.