Yellow green chill

In Christmas 2019 we had a snap election to break the Brexit deadlock. We had a political earthquake throughout the kingdom. Most of England and Wales turned blue and Scotland turned yellow and northern Ireland turned Green. What had happened is Scotland and Northern Ireland showed us that the EU is more important to them than the UK. Being British isn't important to them, at least not as much as the EU. The English and the Welsh voted conservative showing they wanted to get Brexit over with and finished quickly. 

If the SNP cut Scotland off from England and Sinn Fein unite Ireland as a single republic and only England and Wales are in the United Kingdom of Great Britain then what would it mean to be British? Would it be easier for me to call myself English? Or Would we call ourselves lesser Britain? Or formally GB? Or Perhaps Britain itself would become a republic. This is not a new idea, we had devolution in Scotland a few years back the union referendum in Scotland was a close shave, I'm sure Mr Tight fist himself lost some hair over it, not as much as his EU referendum result.