In the UK, your water meter is usually outside near the front pavement, inside a small plastic cover with a metal lid. If you live in a flat or a newer house, it might be inside, often under the kitchen sink or in an airing cupboard. Think of it as a secret agent for your water supply—quietly doing its job until you call on it.
Don’t worry if you can’t find it straight away. I once spent ten minutes lifting random manhole covers before realising my neighbour’s meter was hiding under a flowerpot. If you’re really stuck, check your water bill or their website—they usually tell you exactly where it lives.