I tested washing up liquid from supermarkets - and a budget brand is BETTER than Fairy Liquid | The Sun
Fairy Original Washing Up Liquid 654Ml - Tesco Groceries
Fairy Original Washing Up Liquid - 2.5 L for sale online | eBay
Jantex Washing Up Liquid Concentrate 5 Litre, Green, Pack Quantity: 1 x 5 Litre, Use with Pelican Pump (GF368), Dilution Ratio 1:500 for General Manual Dishwashing, CF975 : Amazon.co.uk: Grocery