The reason Primark cannot simply keep its doors open 24/7 over major holiday weekends comes down to statutory policy. Under the Sunday Trading Act 1994, retail premises in England and Wales with an interior sales area exceeding 280 square meters (roughly 3,000 square feet) face strict limits.
They can open for a maximum of six consecutive hours between 10:00 AM and 6:00 PM on Sundays. On Easter Sunday and Christmas Day, large stores are legally barred from opening altogether.
Because virtually every Primark location covers tens of thousands of square feet, the chain cannot bypass these caps. Scotland, by contrast, operates outside the 1994 Act. Scottish local authorities do not enforce identical floor-space curfews, meaning Scottish sites can welcome shoppers on Easter Sunday if head office chooses to run them. Northern Ireland follows its own statute, restricting Sunday trading to between 1:00 PM and 6:00 PM. Knowing which side of the border your destination sits prevents a ruined afternoon.