When temperatures drop overnight, a proper sleeping bag is what stands between you and hypothermia. UK night temperatures can drop below freezing even in spring and autumn. A well-chosen sleeping bag lets you rest properly, which is critical for decision-making and physical performance.
Choose based on the coldest conditions you’ll face. UK three-season: comfort rating of -5°C.
Down: lightest and warmest but useless when wet. Synthetic: heavier but insulates when damp.
For emergency kits, prioritise compact bags that compress to under 5 litres.
Overheating causes sweating, which makes you colder later. Match the bag to conditions.
A warm, packable mummy sleeping bag suited to three-season UK use and cold-night emergencies. A comfortable way to stay warm if the heating fails or you're stranded.
A roomy two-person bag with a built-in pillow and hood from a trusted British outdoor brand, rated as a 2–3 season bag for milder camping and festivals. It also doubles as a warm, packable layer to keep by the sofa or in the loft for a winter power cut, when keeping two people warm together is more efficient than heating a room. It's bulkier than a solo mummy bag, so treat it as home or car kit rather than something to carry far.
An inexpensive rectangular 3-season bag that's a sensible warmth backup for a car, caravan or home emergency stash rather than serious winter camping. It packs down into an included sack and gives you a warm layer if the heating fails. Rated for milder conditions, so pair it with extra layers or a liner for genuinely cold nights.
A roomy 3-season double bag that two people can share, which makes it a practical bit of warmth to keep at home for a winter power cut as well as for camping. Sharing body heat in one bag is genuinely warmer than two separate ones, and it opens flat as a quilt. It's a budget synthetic bag, so it's bulky and not built for hard mountain use — but for the car, caravan or a cold night indoors it does the job.
A lightweight down-filled mummy sleeping bag that stuffs down small enough to live in a grab bag or the bottom of a rucksack. Down gives a good warmth-to-weight ratio for its packed size, making it a sensible backup for cold nights, power cuts or an unplanned stopover. Keep it dry, as down loses loft when wet, and it will hold its warmth well.
A standard 1-litre natural rubber hot water bottle with a soft fleece cover, and one of the cheapest ways to stay warm through a winter power cut. Boil a kettle on a camping stove, fill it, and it holds heat for hours in a bed or on your lap without drawing a single watt. Simple, reliable warmth that belongs in every cold-weather kit.
A merino-blend long-sleeve top and long johns designed to trap warmth and wick moisture next to the skin. Merino stays warm even when slightly damp and resists odour over several days, which makes it a strong base for a cold power cut, a winter walk or a car left stranded in bad weather. Danish Endurance is a well-reviewed outdoor-basics brand.
A pair of rechargeable hand warmers with three heat settings that clip together magnetically, and each one doubles as a small 5,000mAh power bank for a phone top-up. Reusable is the sensible long-term choice over disposable sachets if you are out in the cold regularly or facing a winter power cut. Both charge and discharge over USB-C.
A proper technical base layer from a trusted Norwegian outdoor brand. The Lifa fabric wicks sweat off your skin and keeps warming even when damp — the difference between staying comfortable and getting a dangerous chill when you're cold and inactive during a power cut or out in winter weather.
Midweight merino-blend base-layer bottoms that pair natural wool warmth against the skin with a synthetic Lifa inner layer to move moisture away. A good choice for genuinely cold, static conditions — sitting out a power cut, an overnight in the cold, or a winter walk — where merino's warmth and odour resistance earn their keep. Costs more than synthetic-only bottoms, but stays comfortable over long wear.
A well-priced synthetic sleeping bag that keeps its warmth even when damp. A sensible, affordable way to make sure everyone has a warm bag.
Compact thermal blanket that reflects up to 90% of body heat. Weighs under 60g and fits in your pocket.
Waterproof emergency sleeping bag that provides shelter from wind, rain, and cold. More durable than an emergency blanket.
Single-use or reusable heat packs that provide warmth for 6–12 hours. Critical for preventing cold injuries.
A refillable rubber bottle that holds warmth for hours from a single kettle or pan of hot water — a cheap, no-power way to stay warm in bed or a cold room during a power cut.
Practical, proven methods to keep yourself and your family warm when the heating fails during a British winter — from layering techniques to emergency heat sources.
A step-by-step guide to building a kit that will sustain you and your family for 72 hours during any emergency.
A calm, UK-focused guide to spotting hypothermia early, preventing it in cold and wet weather, and giving safe first aid while help is on the way.
