Choosing the right first aid kit size can feel confusing. Whether for your workplace, vehicle, school, or home, the kit you choose should match the number of people, the type of environment, and the level of risk.
This guide breaks down the three main UK first aid kit sizes — small, medium, and large — so you can pick the right one with confidence.
In the UK, kit sizes follow the BS 8599-1:2019 standard (for workplaces) and BS 8599-2:2014 (for vehicles). These standards set out the minimum contents required for each size, based on usage and risk levels.
👉 For more detail on the standards, see our workplace first aid kits guide and BS 8599-2 vehicle kits guide.
| Kit Size | Typical Use | Recommended For | Key Contents |
|---|---|---|---|
| Small | Low-risk environments, small groups | Cars, small offices, classrooms, travel kits, home | Basic dressings, plasters, wipes, gloves, leaflet |
| Medium | Moderate-risk settings or larger groups | Workplaces up to 25 people, sports halls, school labs | More dressings, eye wash, burn dressings, extras for incidents |
| Large | High-risk or high-traffic areas | Warehouses, factories, large schools, busy public spaces | Increased quantities, multiple trauma dressings, additional support items |
👉 For help deciding based on environment, check our school kits guide and sports kits guide.
Regardless of size, all kits should be:
👉 See our first aid kit refills and restocking checklist for practical tips.
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