Read the full decision in Mr W Preko v Costco Wholesale UK Ltd: 2302353/2019 - Judgment with Reasons. Read the full decision in Mr W Preko v Costco Wholesale UK Ltd: 2302353/2019 - Judgment. Read the full decision in Mr W Preko v Costco Wholesale UK Ltd: 2302353/2019 - Judgment with Reasons. Read the full decision in Mr W Preko v Costco Wholesale UK Ltd: 2302353/2019 - Costs.