To be honest pricing of Redmi 7 £179 (3GB+64GB) does not make sense in comparison to Redmi Note 7 £179 (3GB+32GB) Ok it's slightly bigger storage but storage is expandable. What you get on note is superior chip, camera, screen resolution, support for the Supports Qualcomm®️ Quick Charge™️ 4 Technology, bluetooth 5.0  along other minor things.

I honestly fear Redmi  will do something reminiscent of Samsung tactics where market is flooded with irrelevant and minor fragmentation with insignificant price difference.