Example
1) EU Size 43 - chart indicates UK equivalent 8¾
2) Select UK sizes 8½ & 9 - try on boots and make own assessment
3) Wide high, volume feet - try UK 9 (or size 9½ if feet are very wide/high volume)
4) Narrow low volume feet - try UK 8½ (or size 8, if feet are very narrow/low volume)