fun fact, sunset, was suppose to be a copy of subway, but they didn’t sell well, so they changed to burgers, fast food, of course, aren’t healthy but it’s better for you to go there then macD, also they have some really amazing pomfritter(frizes chips whatever people call them) which are oven-baked.
Mc Donald’s but I feel we have a good selection in the UK so it hard to choose especially if you are in Glasgow. It also depends what you count as fast food.