From air fryers to hair dryers, in the past decade Black Friday deals have become increasingly common. But some small businesses say the tradition is harming high streets and forcing traders into cutting prices they can ill afford to. Mark Pullen runs Brick Shack – a Lego retailer that also provides activities for children.

Black Friday is usually the best sale of the year on cameras and accessories and this year there are some particularly great deals this time around. Most of the major manufacturers including Sony, Canon,