Uk is the great market in to target using shopify Platform Here is some tips that will be useful for you
1.Select Fast delivery shipping services in UK that deliver in within 24-48 hours.
2.Take VAT certification to avoid any issues
3.Do UK niche specific On page and off page SEO
- Use high Quality 3d Images
5.Make Website Mobile Friendly
6.Stick with Shopify Hosting
7.Start Small but aim Big