Series 4 Gregg Wallace and Cherry Healey visit some of the biggest factories in the UK. Cheese Gregg Wallace is in Gateshead at a processed cheese factory. Pencils Gregg Wallace is in Germany at a pencil factory. Beer Gregg Wallace is in Burton upon Trent at Britain’s biggest brewery. Pizza Gregg Wallace is in Italy at a pizza factory. Potato Waffles Gregg Wallace is in Lowestoft at a frozen food factory. Sausages Gregg Wallace explores a factory that produces 625,000 sausages a day. Toilet Roll Gregg Wallace explores the Manchester factory that produces 700,000 toilet rolls a day.