Tesco, Asda, M&S & Sainsbury’s Halloween costumes under £15

Halloween falls on a Saturday in 2026, giving families more time for trick-or-treating and parties — and more pressure to get the costumes right. But parents don’t need to break the bank. This year, major UK supermarkets are offering top-tier Halloween outfits at unbeatable prices.

Sainsbury’s, Asda, Tesco and M&S have all expanded their kids’ Halloween ranges, featuring styles ranging from traditional wizards and witches to K-pop Demon Hunters and popular Disney characters. The selection spans newborns to 12-year-olds, including adorable pumpkin two-pieces and skeleton sleepsuits for the littlest trick-or-treaters ^[1].

Among the standout picks is the Tu witch costume at Sainsbury’s, complete with a hat and machine washable fabric, available in sizes three to 12 years ^[1]. For fans of the K-pop-inspired film, the Derpy costume — a two-piece blue tiger with glow-in-the-dark details and a mask — is a hit, especially for older kids who love roleplay.

Even the most budget-conscious parents can find something special: a mermaid costume for just £8, a baby pumpkin suit for £10, and a skeleton sleepsuit for just over £5 — all soft, easy to dress in, and perfect for nappy changes ^[1].

For Disney fans, Tesco’s Buzz Lightyear outfit includes wings, control panels and a mask, priced at £20 — a solid value for a full Disney look ^[1]. Meanwhile, the Wednesday Addams school uniform variant offers a spooky twist with holographic emblems and touch-and-close fastenings, ideal for fans of the cult classic.

With so many head-to-head options under £15, families can dress multiple siblings in one go, saving time and money. These costumes are not just for Halloween — many are durable enough for reuse at parties and school events ^[1]. The story was first reported by Metro.