Emergency Kit UK: Complete 72-Hour Preparedness Guide 2025

In 2023, the UK government updated its official emergency preparedness guidance and told households to be ready to survive without outside help for 72 hours. Not 24 hours. Not "a few hours." Three full days. That shift — from "emergency services will arrive soon" to "you need to sustain yourselves" — reflects how major emergencies actually unfold. Storm Eowyn in 2025 knocked out power to over a million homes. Some stayed dark for five days. The households that were prepared didn't panic. The ones that weren't spent three days scrambling.

This guide tells you exactly what goes into a UK emergency kit, which items matter for which scenarios, and what it costs to build one — whether you go DIY or buy pre-assembled.

Why the UK Government Now Recommends 72-Hour Preparedness

The official advice from the Cabinet Office and ReadyScotland is consistent: every UK household should have 72 hours of supplies. The reasoning is straightforward. In a significant emergency — a major storm, widespread flooding, a prolonged power cut — emergency services are overwhelmed. Hospitals are at capacity. Supermarket shelves clear in hours. Road closures cut supply chains.

The 72-hour window is not arbitrary. It reflects how long it typically takes for emergency response to reach households not in immediate danger, and for basic services to begin recovering. Households that can sustain themselves for three days free up emergency capacity for those who genuinely cannot — the elderly, the disabled, people with medical needs.

Preparing a 72-hour kit is not doomsday prepping. It is the same logic as home insurance: most of the time you don't need it, but when you do, the absence of preparation is the problem — not the emergency itself.

The Six Pillars of a 72-Hour Emergency Kit

1. Water

The UK government recommends storing at least three litres of water per person per day. For a family of four, that is 36 litres for 72 hours. Tap water can be disrupted by flooding, burst infrastructure, or power cuts to pumping stations. Store water in sealed bottles (commercially bottled or food-grade containers). Replace every six months. Include water purification tablets as a backup if you need to use tap water that may be contaminated.

2. Food

Three days of non-perishable food does not need to be complicated. Tinned goods (beans, tuna, soup, fruit), dry staples (pasta, rice, oats), and long-life UHT items cover the basics. Include a manual tin opener — not an electric one. Check for dietary needs: infant formula, prescription nutritional products, and allergen-free options should be included if relevant to your household. Rotate your stock every 12 months.

3. Light

A head torch is more useful than a standard torch in an emergency — it leaves your hands free. Keep spare batteries, and consider lithium batteries which last longer in cold conditions. Candles are a useful backup but always use them with fire safety in mind. A battery-powered lantern works well for sustained lighting during a power cut.

4. Heat

Thermal blankets (also called emergency or foil blankets) are compact and effective — they reflect up to 90% of body heat. A standard sleeping bag in the right temperature rating is better for sustained cold. Keep warm layers accessible: thermal underlayers, woolly hats, and gloves. If your central heating is gas-powered but requires an electric thermostat, it will not work in a power cut without a manual override.

5. Communications

A battery-powered or hand-crank radio is essential. BBC Radio 4 (93.5 FM in London, local BBC stations elsewhere) has a statutory duty to broadcast emergency information. The hand-crank variant generates its own power and can also charge a phone via USB. A fully charged power bank (10,000mAh minimum) keeps phones running for 48+ hours. Download offline maps before an emergency, not during one.

6. Documents

Keep waterproof copies of: NHS prescriptions, insurance documents, passports or ID, household contacts, and medical information. Digital is not sufficient — if your phone is dead or the cloud is inaccessible, a printed card in your emergency bag still works. Include the emergency services number for your electricity network (105 in the UK) and your local council's emergency line.

Scenario Guide: What Matters for Each Emergency

Not every emergency demands the same items. Prioritise based on your most likely local risks.

Cost Breakdown: DIY vs Pre-Built Kits

A 72-hour kit for a family of four costs between £80 and £180 depending on what you already own and where you buy. Here is what you are spending on:

• Water storage (36 litres): £8–15 in bottled water or food-grade containers
• Non-perishable food (72 hours): £25–40 from a supermarket, more for specialist emergency rations
• Head torch + batteries: £8–20 (quality matters here — cheap torches fail in cold)
• Hand-crank radio with USB charging: £25–45
• Power bank (10,000mAh+): £15–25
• Thermal blankets (4-pack): £6–12
• First aid kit: £10–20
• Waterproof document bag: £5–10

Total DIY: approximately £100–180. The trade-off with DIY is time and quality control — it is easy to buy items that are technically correct but practically poor (a torch that drains batteries in 3 hours, a radio that only picks up FM poorly).

Pre-built kits range from £40 for basic single-person kits to £150+ for family-sized, scenario-specific options. The difference between a good pre-built kit and a cheap one is whether the items have been tested together — and whether the kit is designed for the scenarios you actually face.

GridReady's Approach: Curated, Tested, Scenario-Specific

GridReady builds UK emergency kits around the three most common household emergencies: power outages, severe weather, and communications failure. Each kit is assembled for the specific demands of that scenario — the Power Outage Kit prioritises power and light; the Severe Weather Kit prioritises warmth and evacuation readiness; the Emergency Comms Kit prioritises information and family coordination.

Everything in a GridReady kit has been selected to actually work in UK conditions: cold weather, multi-day power cuts, network congestion. No branded gimmicks. No items that require power to work in a power cut.