When you don't know your ring size, it's a challenge to find jewellery that fits. If your ring is way too tight, getting it off your finger becomes a real struggle. If it's too big, the ring might slide off, so you're more likely to lose it.
We would always recommend you pay a visit to your local jeweller to get your ring finger sized. They will have a special ring sizing gauge that will quickly and accurately tell you the correct size. There are a number of other things to take into consideration when sizing your finger, for example the ring band width, thickness and shape.
If you already know your ring size you can refer to the chart below to help you choose the correct UK/British size.