How Do They Do It?

E1 Logging, Tiles, Jaffa Cakes E2 Heavy-Lift Aircraft, Hunting Boots, Bananas E3 Monorail, Royal Copenhagen Porcelain, New York Cupcakes E4 Wine, Goretex Extreme Weather Clothing E5 Screws, Marmalade, Printed Dresses E6 Road Rollers, Canned Bread, Vertu Phones E7 Tinned Grapefruit, Snow Machines, Conveyor Belts E8 Harp Strings, Roof Windows, Belgian Waffles E9 AGA Cookers, Incense Sticks, Jenever E10 Robo-farm, Log Stacker, Piano Moving E11 Bamboo Scaffolding, Strontium E12 Espadrilles, Prefabricated Houses, Underground Storage E13 Macadamia Nuts, Tap Water, Crowd Barriers E14 High Rise Construction, Dr. Marten Boots, Cooking Pans E15 Sitar, Biltong, Bulldozers E16 Fedoras, Cement, Frozen Peas E17 Mohair, Quadski, Harp E18 Redbush Tea, Luggage Handling, Hairbrushes E19 Credit Cards, Indian Lunch Deliveries, Boat Lift E20 Power Tunnel, Pizza Ovens, Playhouses