The best kettles in the UK to save energy and speed up your cuppa, tested

We boiled litres of water to find the best electric kettles, from hard-water heroes to vintage-style, repairable and wifi-connected models • The best air fryers, tried and tested for crisp and crunch Despite the march of progress, the humble kettle remains a kitchen staple. It’s what we turn to in times of strife, when spirits are flagging, or to start our day. When a visitor calls, one of the first things we often do is put the kettle on. Many small appliances have evolved beyond their…